Stayed here for 2 months with my fiancee. Location is excellent, space is a comfortable and well laid out English basement, and the host was lovely and accommodating. We asked to check in a few hours early and she made it happen, and when there was a slight hiccup with the internet due to some maintenance work, she quickly got it resolved. Bed is very comfortable; kitchen is spartan but functional.
I’d recommend this to a single person or couple who wants to stay in Dupont circle within easy walking distance to pretty much everything. My only recommendation would be to bring bug spray, as lots of bugs (even by DC standards) tend to swarm around the front entrance.