BETHESDA, Md., July 16, 2012 /PRNewswire/ -- DiamondRock Hospitality Company (the "Company") (NYSE: DRH ) today announced that it completed the acquisition of a portfolio of four hotels from affiliates of Blackstone Real Estate Partners VI ("Blackstone") for a contractual purchase price of approximately $495 million. The hotels acquired are the Hilton Boston Downtown, the Westin Washington D.C. City Center, the Hilton Burlington, and the Westin San Diego (collectively, the "Acquisition Portfolio").