The honesty's refreshing in this one: just a couch in Back Bay for $65 a night. With a $100 security deposit. And a $20 cleaning fee. For a couch. You also get some swingin' hosts: "Both of us are foodies, love museums, and regularly walk the city. Let us know and we can give you suggestions and, if we're around, would love to share a glass of wine or whisky." Just don't spill either on the couch.