Beth+Chris place is very comfortable. It's just like the pictures. The bed was great and the place was perfectly clean.
The location might not be the best but there is a metro station nearby that takes you to the important places in some minutes. We also used the bus.
The hosts provided us with useful information about the area, like places to eat and how to use the rental bikes. It was a pity that we could not meet them personally. Anyway, they were very responsive through the message system of Airbnb.
All in all, we would recomend this place for anyone visiting DC.