Hotel management firm Interstate Hotels & Resorts has signed an agreement to manage 13 hotels that were acquired by affiliates of the Blackstone Group.

The properties were renovated and rebranded under the Hilton, Starwood and Marriott brands, totalling 5,466 rooms.

The portfolio includes six Westins, two Hiltons, two Sheratons, two Marriotts and a Wyndham, located throughout the US and Canada.