The Oyster travel review site has a fun section of "Oyster Photo Fakeouts," in which you can compare hotel marketing photos (above left) with real snapshots (above right). Cropping, careful choice in angles, styling and perhaps even shoop result in large pools, serene settings, close landmarks, and mouthwatering buffets that just don't jibe with reality.
Photo Fakeouts (Oyster.com)
"'The sexy lady' and other hotel photo tricks" (CNN)