I had a great time at Mike's place. He was a great host, very friendly and laid-back. We even had the chance to grab a drink... when you're staying at an airbnb is great to get to meet your host, and not just see the city from a comfy and isolated hotel.
The place is in a great location, just 5 minutes walking from the subway station, in a very quiet neighbourhood. It's near a lot of restaurants and bars, so you can go out during the night.
Everything was just as described, the room is really comfortable, you have access to the kitchen to make yourself a coffee or a meal, and you have your own bath, which is great for privacy.
I highly recommend staying at Mike's place. I will definitively stay there again if I go to D.C.