We were only staying here during the day to work, while our nearby home is being renovated, but the apartment was very clean and well-appointed. Communication was great, and checking in and out was seamless. The only con would be that there is a lot of noise above off and on - heavy footsteps, talking, etc. but that is to be expected in an English basement apartment. It worked just fine for what we needed it for. And our small dog was quite comfortable and it's a great neighborhood for dog walks as well.
Even though we weren't visiting from out of town, there were lots of fun and helpful hints and amenities for those who would be - and the location is great as a visitor to DC. Very nice welcoming touches.