Really enjoyed staying with Elmar & Michelle during a recent trip to DC.
Their home is located in a great part of town (Shaw Neighborhood) full of new restaurants and bars within a 5-10 minute walk (would definitely recommend Compass Coffee for a quick bite in the morning). Additionally, it has easy access to nearby metro stations, making the rest of city just a train-ride away.
The space itself has all the necessary amenities (full bathroom, bedroom, kitchen area, living room with couch that folds into bed, and wi-fi access) and is very comfortable. I was traveling by myself but the space could easily accommodate others. They also kept it stocked with coffee/tea/breakfast items.
Elmar & Michelle are extremely gracious hosts - gave me plenty of suggestions for places around the neighborhood and points of interest in the city, even invited me to a dinner they were hosting as well as watch the final of the Euro soccer tournament. They have cats but they were rarely seen and also stayed out of the basement area.
Would definitely recommend!