We stayed just one night during our DC sightseeing. The place is conveniently located close to the US Capitol and the museums. The check-in was very easy, and you get your separate entrance from the front of the house. Nick was very responsive and helpful. Parking on the street was easy, and we parked right in front of the house.
There is one bed, a foldable couch, and a foldable sofa. The couch was a little difficult to fold, but after a little effort, we managed. The bathtub could use a little cleaning, but it was OK. AC was a little cold, but since there was a heatwave, it was just right. There are no plates or silverware, so bring something with you if you plan to use it. There is some sort of a pump in one of the closets, and it was quite loud throughout most of the night. I wouldn't hesitate to stay again.