Our stay at Jim & Kat's place was a wonderful experience. Everything was as described, or probably even better.
They contacted us with all the instructions to access the apartment. Very easy and clear.
The neighborhood is really nice. Very close to the Capitol and other touristic spots. We walked everywhere, which is really nice. The area is quiet and super safe.
Their basement-apartment is really new, clean and well equipped. Super comfy bed. Well conditioned. And with a lot of books, magazines to pick after a day of long tourist walk.
Union Station is a 10 min walk, so that is also very convenient for either moving around Washington DC or to arrive/depart to the airport.
Everything fantastic, an A+ place.