DiamondRock Hospitality Company is a lodging-focused Maryland corporation operating as a real estate investment trust (REIT). It owns a portfolio of 27 premium hotels and resorts that contain 11,590 guest rooms. It also holds the senior note on a mortgage loan secured by an additional hotel and has the right to acquire, upon completion, a hotel under development. Its portfolio is concentrated in key gateway cities and destination resorts. Each of its hotels is managed by a third party and are operated under a brand owned by one of the global lodging brand companies (Marriott International, Inc. (Marriott), Starwood Hotels & Resorts Worldwide, Inc. (Starwood) or Hilton Worldwide (Hilton)). On July 12, 2012, it acquired a portfolio of four hotels from affiliates of Blackstone Real Estate Partners VI. . On November 9, 2012, it acquired the 94-room Hotel Rex located in San Francisco, California.