We stayed at Maria and Margot's place for two nights while we were visiting DC. It is without a doubt one of the best airbnb stay we have ever had. No complaints whatsoever!!!
The local is just perfect if you want to visit the tourist attractions and is close to bus and metro routes. The airbnb itself was sparkling clean. They also provided us with some breakfast items like english muffin, juice, yoghurt, butter, tea and coffee which was extremely sweet of them to do so.
The airbnb had a private entrance and the checkin process was as smooth as it can get.
In short, Just book it! Absolutely worth the value!