This is an outstanding experience, and I'd stay there anytime again when it's available. in fact, we already tried to book it for our next visit but somebody else had already beaten us to it. First, the place is super clean. John is also a great host, and really goes above and beyond making you feel welcome, without being intrusive. When I came "home" on my first night, the fireplace was on, and there was a bottle of wine on the table, with some fruit and snacks. I was so happy to sit on the couch and relax.
The apartment is an English basement - with lots of natural light. There are big windows around a sitting area, near the fireplace. The kitchen has a large window, and the bedroom has two. The area is also very quiet, so our visit felt restful. And it is just a block away from the Capitol and the Library of Congress. And if the weather is bad, you can watch movies. Highly recommend!