We stayed for four nights and found the apartment to be comfortable and convenient for our exploration of DC. Well-equipped with everything we needed for a few nights, the bed was comfortable and we appreciated having space to relax after a long day at the various museums and other places visited. Alex and John were quick to respond and answer our check-in questions, the neighborhood is very quiet overnight and close to some great restaurants, Trader Joes and the Eastern Market Metro station. The US Capitol is a pleasant walk away.
The only downside for us was the family upstairs starting their day at 7am which meant lots of overhead noise of folks moving about and a child running when we wanted to sleep longer - we are not early risers! It didn't spoil our stay.