First off - location: You won't find a more convenient, but quiet, neighborhood in all of DC. A short walk from the Red Line made it super easy for me to get to a conference, and it is a very pleasant place to walk around (when the weather's nice).
The place itself is also well-appointed and very clean. There were five of us (all adults), and the sleeping arrangements were perfect. There's also a bunch of artwork and decorations on the walls that made the place more welcoming than typical temporary lodgings are. I really liked the tiger sculpture. The wifi worked great, and they have TV in case you stay inside when the weather doesn't cooperate.
The host (Tedd) greeted us and was very personable. He was always quick to respond and did his best to make us feel at home away from home.