Jason was great, and the houseboat was surprisingly spacious and well-stocked, with lots of little thoughtful touches throughout. (Be sure to watch the video he sends you, which points out all the little tips and tricks you'll need for exploring the boat.) My only reservation: It's not a great location if you're car-less and planning to do the usual DC tourist stuff. Share bikes are near at hand, but the Metro is a ways off, the nearest grocery/convenience store is even further, and the Mall is even further still. If you're just planning to relax, though, this place is perfect.