David's place is wonderful! The location is super accessible by metro and walkable too. The neighbourhood is safe and pretty. David is super hospitable, I felt very welcome, and he gave great tips for places he thought I would enjoy (and they were spot on!)
The room itself is really nice and spacious - the photos do not do it justice. It has a good workspace, a comfortable bed, and is just really nice.
I highly highly recommend staying here if you ever visit DC - I will definitely be returning to David's the next time I visit.