My wife and I stayed in Bradley's place with our 18 month old son and in-laws. The apartment was great and in a perfect location for seeing the sights in Washington. It was approx 15 minute walk to the Capitol and very close to some lovely restaurants also.
Note its $35 for a parking permit and you need to be careful where you park as only some of the street parking is not metered but we got a space right outside the apartment which was ideal.
There was plenty of room for all of us with the bedroom and pull out sofa and loads of room for our son to move around too.
Would definitely stay again and highly recommend!