Zach and Kate were great hosts. They answered any questions quickly, were organized, and have added some great little amenities to the room (amen for coffee!). My family of 4 stayed in their basement apartment for 3 nights. It was suited perfectly for us with one bedroom and a pullout couch, and a nice bathroom. It was about a 10 minute walk to the metro, and then about 15 minutes to all the best of D.C. I definitely recommend Zack and Kate's place for your trip to D.C.