I stayed here after a job interview to do a bit of house-hunting in the Navy Yard area. The quiet neighborhood is very close to the action and very metro-accessible (I think 3 stops were in a quick walking distance?).
The inside of the space is extremely quiet. I've stayed in many English basement units and usually expect significant noise- this one was notably well-built.
Gorgeous outdoor space, and I was able to fit my Rav4 with a roof rack quite easily into the off-street parking spot they provided.
I think I'm also allowed to put my stamp of approval on their furnace and insulation- I stayed on one of DC's single-digit nights, and wasn't ever cold.