EXHIBIT 2.2 CERTIFICATE OF MERGER OF AHT RES II ACQUISITION, L.P. INTO MARRIOTT RESIDENCE INN II LIMITED PARTNERSHIP Pursuant to Section 17-211 of the Delaware Revised Uniform Limited Partnership Act, Marriott Residence Inn II Limited Partnership, a limited partnership organized and existing under the law of the State of Delaware (the "Limited Partnership"), does hereby certify to the following facts relating to the merger (the "Merger") of AHT Res II Acquisition, L.P., a limited partnership organized and existing under the law of the State of Delaware ("Merger Sub"), into the Limited Partnership: FIRST: That the name and state of formation of each constituent entity that is a party to the Merger is as follows: Name State of Formation Marriott Residence Inn II Limited Partnership Delaware AHT Res II Acquisition, L.P. Delaware SECOND: That an Agreement and Plan of Merger has been approved and executed by Merger Sub and the Limited Partnership in accordance with Section 17-211 of the Delaware Revised Uniform Limited Partnership Act. THIRD: That the name of the surviving entity is "Marriott Residence Inn II Limited Partnership." FOURTH: This Certificate of Merger shall be effective as of August 28, 2002. FIFTH: That the Agreement and Plan of Merger is on file at the place of business of the surviving entity at the following address: Marriott Residence Inn II Limited Partnership c/o AHT Res II GP, Inc. 10 South Third Street Richmond, Virginia 23219 SIXTH: That a copy of the Agreement and Plan of Merger will be furnished by the Limited Partnership, on request and without cost, to any partner of the Limited Partnership or Merger Sub. [Signature follows on next page] 2 IN WITNESS WHEREOF, Marriott Residence Inn II Limited Partnership has caused this Certificate of Merger to be duly executed as of this 28/th/ day of August, 2002. Marriott Residence Inn II Limited Partnership By: RIBM Two LLC, its sole general partner By: /s/ Robert E. Parsons, Jr. ------------------------------- Name: Robert E. Parsons, Jr. Title: President and Manager 3