This is mostly-pleasant, if dark, English Basement in a great location just around the corner from the Petworth Metro! It was plenty roomy for a long weekend, and was quite comfortable. Hopefully Alper will improve a few things about the bathroom (which is missing a towel hook, and is very poorly lit) -- aside from that, a great place to stay!
Note that if you're extremely sensitive to noise, you can hear the Metro rumble every few minutes, and the townhouse is on a busy corner. It didn't bother me at all, but it might bother some people.