Sean is a great host and is very responsive. The location is nicely situated to H street, Barracks Row/Eastern Market, and the Smithsonian.
The place itself was well kept and clean. It contains all that you need for a short stay.
My only knock, but a big one, is that the people living above are very noisy starting at 7am in the morning and throughout the day. It's pretty constant until they decide to go to sleep by 9pm ish.