I stayed at Courtney's wonderful house with five of my colleagues when we were in town for a conference. The place is beautiful and was very clean. It is definitely a luxury home! The showers, in particular, were amazing. I really enjoyed the waterfall style shower!
The location was awesome--close to restaurants etc. in both Adams Morgan and U/14th St (closer to Adams Morgan). I really enjoyed Pleasant Pops right down the street from the house. And, it is only about 15 minutes from metro stops (yellow/green in one direction and red in another) which made it convenient to get around the city. We didn't use it, but they even had their protected parking space AND a street visitor pass available for us, which is definitely a perk for anyone visiting with a car.
They only had two keys, so that took a bit of coordination from us since we weren't always on the same schedule at the conference. But we were able to make it work and never had a problem with it.