Sunstone Hotel Investors Inc is a real estate investment trust that acquires, owns, manages, and renovates the full-service hotel and select-service hotel properties across various states in the United States. Its firm's portfolio consists upper upscale and luxury hotels located in convention, resort destination and urban markets. Its majority of the hotels operate under a brand owned by Marriott, Hilton, Hyatt, Four Seasons or Montage. It operates geographically in Califiornia which generates the majority of its revenue; Florida; and Hawaii. The company's sole source of income is hotel revenue from its hotel ownership segment.