SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                ----------------

                                 SCHEDULE 13D
                                (Rule 13d-101)

            INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                 RULE 13d-2(a)

                             (Amendment No. 4)(1)


                           Host Marriott Corporation
- --------------------------------------------------------------------------------
                               (Name of Issuer)


                    Common Stock, par value $.01 per share
- --------------------------------------------------------------------------------
                        (Title of Class of Securities)


                                  44107P104
- --------------------------------------------------------------------------------
                                (CUSIP Number)

                               Thomas J. Saylak
                    Blackstone Real Estate Associates L.P.
                         345 Park Avenue, 31st Floor
                           New York, New York 10154
                                (212) 935-2626

                               With a copy to:

                             Gregory Ressa, Esq.
                          Simpson Thacher & Bartlett
                             425 Lexington Avenue
                           New York, New York 10017
                                (212) 455-2000

- --------------------------------------------------------------------------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)

                                 May 8, 2001

- --------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

     If the filing person has previously filed a statement on Schedule 13G to
report the acquisition that is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the
following box [_].


          Note: Schedules filed in paper format shall include a signed
     original and five copies of the schedule, including all exhibits. See
     Rule 13d-7 for other parties to whom copies are to be sent.

                         (Continued on following pages)
                               (Page 1 of 36 pages)

- ----------
(1)  The remainder of this cover page shall be filled out for a reporting
     person's initial filing on this form with respect to the subject class of
     securities, and for any subsequent amendment containing information which
     would alter disclosures provided in a prior cover page.

     The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).




CUSIP No. 44107P104 13D Page 2 of 36 - -------------------------------------------------------------------------------- (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Partners II L.P. I.R.S. Identification No. - 13-3930073 - -------------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] - -------------------------------------------------------------------------------- (3) SEC USE ONLY - -------------------------------------------------------------------------------- (4) SOURCE OF FUNDS* 00 - -------------------------------------------------------------------------------- (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] - -------------------------------------------------------------------------------- (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- (7) SOLE VOTING POWER NUMBER OF 6,641,942 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY ----------------------------------------------------------------- EACH (9) SOLE DISPOSITIVE POWER REPORTING 6,641,942 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 - -------------------------------------------------------------------------------- (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,110,412 - -------------------------------------------------------------------------------- (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] - -------------------------------------------------------------------------------- (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 2.7% - -------------------------------------------------------------------------------- (14) TYPE OF REPORTING PERSON* PN - -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 3 of 36 - -------------------------------------------------------------------------------- (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Holdings II L.P. I.R.S. Identification No. - 13-3916108 - -------------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] - -------------------------------------------------------------------------------- (3) SEC USE ONLY - -------------------------------------------------------------------------------- (4) SOURCE OF FUNDS* 00 - -------------------------------------------------------------------------------- (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] - -------------------------------------------------------------------------------- (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- (7) SOLE VOTING POWER NUMBER OF 2,042,673 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY ----------------------------------------------------------------- EACH (9) SOLE DISPOSITIVE POWER REPORTING 2,042,673 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 - -------------------------------------------------------------------------------- (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,511,143 - -------------------------------------------------------------------------------- (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] - -------------------------------------------------------------------------------- (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.95% - -------------------------------------------------------------------------------- (14) TYPE OF REPORTING PERSON* PN - -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 4 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Partners II.TE.1 L.P. I.R.S. Identification No. - 13-3915147 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 4,990,565 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 4,990,565 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,459,035 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 2.1% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 5 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Partners II.TE.2 L.P. I.R.S. Identification No. - 13-3915149 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 _______________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 214,596 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 214,596 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 683,066 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.3% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 6 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Partners II.TE.3 L.P. I.R.S. Identification No. - 13-3943180 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 1,025,959 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 1,025,959 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,494,429 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.6% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 7 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Partners II.TE.4 L.P. I.R.S. Identification No. - 13-3943181 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 208,693 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 208,693 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 677,163 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.3% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 8 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Partners II.TE.5 L.P. I.R.S. Identification No. - 13-3973673 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 438,980 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 438,980 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 907,450 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.3% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 9 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Partners I L.P. I.R.S. Identification No. - 13-3930073 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 1,934,258 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 1,934,258 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,402,728 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.9% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 10 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Partners Two L.P. I.R.S. Identification No. - 13-3787414 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 126,834 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 126,834 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 595,304 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.2% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 11 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Partners Three L.P. I.R.S. Identification No. - 13-3787415 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 1,230,545 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 1,230,545 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,699,015 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.6% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 12 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Partners IV L.P. I.R.S. Identification No. - 13-3787416 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 38,684 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 38,684 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 507,154 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.2% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 13 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone RE Capital Partners L.P. I.R.S. Identification No. - 13-3794146 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 201,766 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 201,766 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 670,236 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.25% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 14 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone RE Capital Partners II L.P. I.R.S. Identification No. - 13-3794148 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 22,146 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 22,146 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 490,616 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.2% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 15 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone RE Offshore Capital Partners L.P. I.R.S. Identification No. - 13-3794149 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 38,965 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 38,965 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 507,435 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.2% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 16 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Holdings L.P. I.R.S. Identification No. - 13-3789506 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 1,349,205 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 1,349,205 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,817,675 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.7% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 17 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) CR/RE L.L.C. ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 27,078 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 27,078 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 495,548 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.2% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* 00 ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 18 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) BRE Logan Hotel Inc. I.R.S. Identification No. - 13-3731847 ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 14,362 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY None OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 14,362 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH None ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,362 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Less than 0.1% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* CO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 19 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) BRE/Ceriale L.L.C. ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* OO ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 468,470 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY None OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 468,470 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH None ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 468,370 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.2% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* 00 ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 20 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) RTZ Management Corp. ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 14 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY None OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 14 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH None ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Less than 0.1% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* CO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 21 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Associates L.P. ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* 00 ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF None SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 4,061,668 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING None PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 4,061,668 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,061,668 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.5% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 22 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Associates II L.P. ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* Not Applicable ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF None SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 13,989,205 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING None PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 13,989,205 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 13,989,205 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.3% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 23 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Blackstone Real Estate Management II L.P. ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* Not Applicable ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF None SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 16,031,878 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING None PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 16,031,878 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 16,031,878 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.05% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* PN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 24 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) BREA L.L.C. ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* Not Applicable ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF None SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 5,410,873 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING None PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 5,410,873 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,410,873 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 2.0% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* OO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 25 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) BREA II L.L.C. ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* Not Applicable ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF None SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 16,031,878 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING None PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 16,031,878 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 16,031,878 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.05% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* OO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 26 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Peter G. Peterson ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* Not Applicable ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION U.S. ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF None SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 20,988,657 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING None PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 20,988,657 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 20,988,657 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.9% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* IN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 27 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Stephen A. Schwarzman ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* Not Applicable ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION U.S. ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF None SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 20,988,657 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING None PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 20,988,657 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 20,988,657 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.9% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* IN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 28 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) John G. Schreiber ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* Not Applicable ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION U.S. ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF None SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY None OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING None PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 17,582,403 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 17,582,403 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.6% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* IN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 29 of 36 ________________________________________________________________________________ (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) John Ceriale ________________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ (3) SEC USE ONLY ________________________________________________________________________________ (4) SOURCE OF FUNDS* Not Applicable ________________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION U.S. ________________________________________________________________________________ (7) SOLE VOTING POWER NUMBER OF 27,078 SHARES _________________________________________________________________ (8) SHARED VOTING POWER BENEFICIALLY 468,470 OWNED BY _________________________________________________________________ EACH (9) SOLE DISPOSITIVE POWER REPORTING 27,078 PERSON _________________________________________________________________ (10) SHARED DISPOSITIVE POWER WITH 468,470 ________________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 495,548 ________________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.2% ________________________________________________________________________________ (14) TYPE OF REPORTING PERSON* IN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 44107P104 13D Page 30 of 36 AMENDMENT NO. 4 The Statement on Schedule 13D relating to the Common Stock, par value $.01 per share (the "Common Stock") of Host Marriott Corporation, a Maryland corporation (the "Issuer") initially filed on May 13, 1999, as amended (the "Schedule 13D"), by Blackstone Real Estate Partners II L.P. ("BRE II"); Blackstone Real Estate Holdings II L.P. ("BREH II"); Blackstone Real Estate Partners II T.E. 1 L.P. ("BRE II TE 1"); Blackstone Real Estate Partners II T.E. 2 L.P. ("BRE II TE 2"); Blackstone Real Estate Partners II T.E. 3 L.P. ("BRE II TE 3"); Blackstone Real Estate Partners II T.E. 4 L.P. ("BRE II TE 4"); Blackstone Real Estate Partners II T.E. 5 L.P. ("BRE II TE 5"); Blackstone Real Estate Partners I L.P. ("BRE I"); Blackstone Real Estate Partners Two L.P. ("BRE Two"); Blackstone Real Estate Partners Three L.P. ("BRE Three"); Blackstone Real Estate Partners IV L.P. ("BRE IV"); Blackstone RE Capital Partners L.P. ("BRECP"); Blackstone RE Capital Partners II L.P. ("BRECP II"); Blackstone RE Offshore Capital Partners L.P. ("BOC"); Blackstone Real Estate Holdings L.P. ("BREH"); CR/RE L.L.C. ("CRRE"); BRE/Ceriale L.L.C. ("BRE/Ceriale"); RTZ Management Corp. ("RTZ"); BRE Logan Hotel Inc. ("Logan"); Blackstone Real Estate Associates L.P. ("BREA"); Blackstone Real Estate Associates II L.P. ("BREA II"); Blackstone Real Estate Management Associates II L.P. ("BREMA II"); BREA L.L.C. ("BREA LLC"); ("BREA II LLC"); Peter G. Peterson ("Peterson"); Stephen A. Schwarzman ("Schwarzman"); John G. Schreiber ("Schreiber"); and John Ceriale ("Ceriale"), is hereby amended as set forth herein. Responses to each item below may be incorporated by reference into each other item, as applicable. Capitalized terms used herein but not defined shall have the meanings set forth in the Schedule 13D. Item 5. Interest in Securities of the Issuer. Item 5 is hereby deleted in its entirety and replaced by the following text: As of the date of this filing, the Reporting Persons own, in the aggregate, 21,015,735 OP Units, which are redeemable for cash (or at the Issuer's election, exchangeable for Common Stock on a one-for-one basis). Notwithstanding the foregoing, this Item 5 discloses the aggregate number of Common Stock that the Reporting Persons may be deemed beneficially to own due to their right to redeem OP Units. As of the date of this filing, BRE II, BREH II, BRE II TE 1, BRE II TE 2, BRE II TE 3, BRE II TE 4 and BRE II TE 5 may be deemed to beneficially own 6,641,942 (or approximately 2.5% of the outstanding shares of Common Stock; all percentages herein are based on the total number of shares of Common Stock outstanding as reported in the Issuer's most recently filed Schedule 14A filed on April 12, 2001, based upon best available information as of the date hereof), 2,042,673 (0.8%), 4,990,565 (1.9%), 214,596 (less than 0.1%), 1,025,959 (0.4%), 208,693 (less than 0.1%) and 438,980 (0.2%) shares of Common Stock, respectively. As of the date of this filing, BRE I, BRE Two, BRE Three, BRE IV, BRECP, BRECP II, BOC and BREH may be deemed to beneficially own 1,934,258 (0.7%), 126,834 (less than 0.1%), 1,230,545 (0.5%), 38,684 (less than 0.1%), 201,766 (less than 0.1%), 22,146 (less than 0.1%), 38,965 (less than 0.1%) and 1,349,205 (0.5 %) shares of Common Stock, respectively. As of the date of this filing, CRRE, Logan, Ceriale and RTZ may be deemed to beneficially own 27,078 (less than 0.1%), 14,362 (less than 0.1%), 468,470 (0.2%) and 14 (less than 0.1%) shares of Common Stock, respectively.

CUSIP No. 44107P104 13D Page 31 of 36 Such shares of Common Stock represent, in the aggregate, 21,015,575 shares of Common Stock, or approximately 7.9% of the total number of shares of Common Stock outstanding as reported in the Issuer's most recently filed Schedule 14A filed on April 12, 2001. As of the date of this filing, each of the above-mentioned Reporting Persons, acting through each of their respective direct or indirect general partners and members, has the sole power to vote or direct the vote and to dispose or direct the disposition (subject to the provisions of the Contribution Agreement and the Partnership Agreement) of the above mentioned shares of Common Stock beneficially owned by each such Reporting Person. In addition, by reason of their status as members of Ceriale, BRE I, BRE Two, BRE Three, BRE IV, BRECP, BRECP II, BOC, BREH, BRE II, BREH II, BRE II TE 1, BRE II TE 2, BRE II TE 3, BRE II TE 4, BRE II TE 5 and CRRE may be deemed to beneficially own the 468,470 (0.2%) shares of Common Stock beneficially owned by Ceriale. As of the date of this filing, BRE I, BRE Two, BRE Three, BRE IV, BRECP, BRECP II, BOC, BREH, BRE II, BREH II, BRE II TE 1, BRE II TE 2, BRE II TE 3, BRE II TE 4, BRE II TE 5 and CRRE have the shared power to vote or direct the vote and to dispose or direct the disposition (subject to the provisions of the Contribution Agreement and the Partnership Agreement) of the shares of Common Stock beneficially owned by Ceriale. By reason of its status as the general partner of BRE I, BRE Two, BRE Three, BRE IV, BRECP, BRECP II and BOC, BREA has the shared power to vote or direct the vote and to dispose or direct the disposition of the shares of Common Stock owned by such entities (in each case to the extent that BRE I, BRE Two, BRE Three, BRE IV, BRECP, BRECP II and BOC have such power) and, accordingly, may be deemed to beneficially own 4,061,668 (1.5%) shares of Common Stock. By reason of its status as the general partner of BRE II, BRE II TE 1, BRE II TE 2, BRE II TE 3, BRE II TE 4, BRE II TE 5, BREA II has the shared power to vote or direct the vote and to dispose or direct the disposition of shares of Common Stock owned by such entities (in each case to the extent that BRE II, BRE II TE 1, BRE II TE 2, BRE II TE 3, BRE II TE 4, BRE II TE 5, have such power) and, accordingly, may be deemed to beneficially own 13,989,205 (5.3%) shares of Common Stock. By reason of the requirement that any disposition of an investment (directly or indirectly) by entities to which BREA and BREA II serves as general partner requires the approval of Schreiber, Schreiber has shared power to dispose or direct the disposition of the shares of Common Stock that may be deemed to be beneficially owned by BREA and BREA II (in each case to the extent that BREA and BREA II has such power) and, accordingly, may be deemed to beneficially own 17,582,403 (6.6%) shares of Common Stock which may be deemed to be beneficially owned by BREA and BREA II. By reason of its status as the general partner of BREA and BREH, BREA LLC has the shared power to vote or direct the vote and to dispose or direct the disposition of the shares of Common Stock that may be deemed to be beneficially owned by BREA and BREH (in each case to the extent that the BREA and BREH have such power) and, accordingly, may be deemed to beneficially own 5,410,873 (2.0%) shares of Common Stock.

CUSIP No. 44107P104 13D Page 32 of 36 By reason of its status as the general partner of BREA II and BREH II, BREMA II has the shared power to vote or direct the vote and to dispose or direct the disposition of the shares of Common Stock that may be deemed to be beneficially owned by BREA II and BREH II (in each case to the extent that the BREA II and BREH II have such power) and, accordingly, may be deemed to beneficially own 16,031,878 (6.05%) shares of Common Stock. By reason of its status as the general partner of BREMA II, BREA II LLC has the shared power to vote or direct the vote and to dispose or direct the disposition of the shares of Common Stock that may be deemed to be beneficially owned by BREA II and BREH II (in each case to the extent that the BREA II and BREH II have such power) and, accordingly, may be deemed to beneficially own 16,031,878 (6.05%) shares of Common Stock. By reason of their ability to control BREA LLC, BREA II LLC, RTZ and Logan, Peterson and Schwarzman have shared power to vote or to direct the vote and to dispose or direct the disposition of the shares of Common Stock that may be deemed to be beneficially owned by BREA LLC, BREA II LLC, RTZ and Logan (in each case to the extent that BREA LLC, BREA II LLC, RTZ and Logan have such power) and, accordingly, may be deemed to beneficially own 20,988,657 (7.9%) shares of Common Stock. By reason of his status as a member with sole beneficial ownership of CRRE, Ceriale may be deemed to beneficially own, in the aggregate, the 495,548 (0.2%) shares of Common Stock beneficially owned by CRRE. As of the date of this filing, Ceriale has the sole and shared power to vote or direct the vote and to dispose or direct the disposition (subject to the provisions of the Contribution Agreement and the Partnership Agreement) of the shares of Common Stock beneficially owned by CRRE. To the best knowledge of each of the Reporting Persons, none of the Reporting Persons has beneficial ownership of, or has engaged in any transaction during the past 60 days in, any shares of Common Stock, except as otherwise disclosed herein. Pursuant to Rule 13d-4 under the Securities Exchange Act of 1934, as amended (the "Act"), the Reporting Persons declare that the filing of this statement shall not be construed as an admission that any such Reporting Person is, for the purposes of Section 13(d) or 13(g) of the Act, the beneficial owner of any securities covered by this statement. Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer. Item 6 is hereby supplemented as follows: Pursuant to the Underwriting Agreement (the "Underwriting Agreement"), dated as of May 2, 2001, among the Issuer, Salomon Smith Barney Inc. ("Salomon"), Host Marriott, L.P. and BRE I, BRE Two, BRE Three, BRE IV, BRECP, BRECP II, BOC, BREH, BRE II, BREH II, BRE II TE 1, BRE II TE 2, BRE II TE 3, BRE II TE 4, BRE II TE 5 and Logan (collectively, the "Selling Shareholders"), the Selling Shareholders agreed to sell, in the aggregate, 10,000,000 shares of Common Stock to Salomon for a price of $12.32 per share. The Common Stock sold by the Selling Shareholders was issued to them by the Issuer upon the redemption of 10,000,000 OP Units held by them prior to the closing of the sale of Common

CUSIP No. 44107P104 13D Page 33 of 36 Stock. The closing of the sale of Common Stock took place on May 8, 2001. After giving effect to sale of Common Stock, all Reporting Persons hold, in the aggregate, 21,015,735 OP Units, which are redeemable for cash or (at the election of the Issuer) shares of Common Stock (on a one-for-one basis). A copy of the Underwriting Agreement is filed as Exhibit 7 hereto and is incorporated herein by reference. Item 7. Material to be filed as Exhibits. INDEX OF EXHIBITS Description ----------- Exhibit 7 Underwriting Agreement, dated as of May 2, 2001, among the Issuer, Salomon, Host Marriott, L.P. and the Selling Shareholders.

CUSIP No. 44107P104 13D Page 34 of 36 SIGNATURES After reasonable inquiry and to the best of his or its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct. Dated: May 15, 2001 BLACKSTONE REAL ESTATE PARTNERS I L.P. BLACKSTONE REAL ESTATE PARTNERS TWO L.P. BLACKSTONE REAL ESTATE PARTNERS THREE L.P. BLACKSTONE REAL ESTATE PARTNERS IV L.P. BLACKSTONE RE CAPITAL PARTNERS L.P. BLACKSTONE RE CAPITAL PARTNERS II L.P. BLACKSTONE RE OFFSHORE CAPITAL PARTNERS L.P. BLACKSTONE REAL ESTATE HOLDINGS L.P. BLACKSTONE REAL ESTATE PARTNERS II L.P. BLACKSTONE REAL ESTATE HOLDINGS II L.P. BLACKSTONE REAL ESTATE PARTNERS II.TE.1 L.P. BLACKSTONE REAL ESTATE PARTNERS II.TE.2 L.P. BLACKSTONE REAL ESTATE PARTNERS II.TE.3 L.P. BLACKSTONE REAL ESTATE PARTNERS II.TE.4 L.P. BLACKSTONE REAL ESTATE PARTNERS II.TE.5 L.P. CR/RE L.L.C. BRE LOGAN HOTEL INC. BRE/CERIALE L.L.C. RTZ MANAGEMENT CORP. BLACKSTONE REAL ESTATE ASSOCIATES L.P. BLACKSTONE REAL ESTATE ASSOCIATES II L.P. BLACKSTONE REAL ESTATE MANAGEMENT ASSOCIATES II L.P. BREA L.L.C. BREA II L.L.C. PETER G. PETERSON STEPHEN A. SCHWARZMAN JOHN G. SCHREIBER

CUSIP No. 44107P104 13D Page 35 of 36 JOHN CERIALE By: /s/ Gary M. Sumers ____________________ Name: Gary M. Sumers Title: Attorney-in-fact

CUSIP No. 44107P104 13D Page 36 of 36 INDEX OF EXHIBITS Description ----------- Exhibit 1 Joint Filing Agreement and Power of Attorney dated as of May 13, 1999, among the Reporting Persons relating to the filing of a joint statement on Schedule 13D, incorporated by reference to Exhibit 1 to the Schedule 13D. Exhibit 2 Second Amended and Restated Agreement of Limited Partnership of the Issuer, incorporated by reference to Exhibit 3.1 to the Registration Statement of the Issuer on Form S-4/A, dated October 10, 1998. Exhibit 3 Contribution Agreement dated as of April 16, 1998 by and among the Issuer, the Operating Partnership, and the Contributors (as defined therein), incorporated by reference to Exhibit 10.18 to the Registration Statement of the Issuer on Form S-4/A dated October 10, 1998. Exhibit 4 Amendment #1 to Contribution Agreement, dated May 8, 1998, incorporated by reference to Exhibit 10.19 to the Registration Statement of the Issuer on Form S-4/A dated October 10, 1998. Exhibit 5 Amendment #2 to Contribution Agreement, dated May 18, 1998, incorporated by reference to Exhibit 10.20 to the Registration Statement of the Issuer on Form S-4/A dated October 10, 1998. Exhibit 6 Underwriting Agreement, dated as of February 1, 2001, among the Issuer, Salomon, Host Marriott, L.P. and the Selling Shareholders, incorporated by reference to Exhibit 1.1 to the Current Report of the Issuer on Form 8-K dated February 7, 2001. Exhibit 7 Underwriting Agreement, dated as of May 2, 2001, among the Issuer, Salomon, Host Marriott, L.P. and the Selling Shareholders, incorporated by reference to Exhibit 1.1 to the Current Report of the Issuer on Form 8-K dated May 8, 2001.