PRNewswire -- Sunstone Hospitality Management (SHM), a division of the nation's largest independent management company, Interstate Hotels & Resorts (OTC Bulletin Board: IHRI), today announced that is has entered into a contract to manage the 292-room, full-service Marriott Hotel in downtown Riverside, California. The hotel was recently acquired by San Diego-based Pinnacle Hotels USA. SHM had managed the hotel the past nine years for prior ownership.
