Antico Pignolo in Venice. Food was average (bland but edible) but prices were outrageous. I wouldn't mind paying $140/pp if the meal was very nice but this wasn't. It left me wondering - "How could this be? We're in Italy!". Then, I realized it was a tourist trap i.e. our hotel concierge (and many others) recommended this place coz they get a kickback. That really made me mad since we were staying at a nice hotel and wanted quality food.

For comparison, we went to a sublime restaurant the next day (of our own finding). 5-course meal, incredible food, for $90/pp. They were part of a Venetian restaurant association called "Buona Accoglienza". We liked it so much we tried another restaurant on the list the next night and it was a hit as well!