OK unless you want to sleep
The hotel was at least half empty when I stayed. I asked for a quiet room and was assured that they would take that into consideration. When I arrived, the receptionist also assured me that she was giving me a quiet room.
The hotel is located on 16th Street, one of the most major roads in DC. There is heavy and noisy traffic into the early hours. You can hear horns, motorcycles and heavy vehicles as they pass by. Yes, they have double-pane windows. It doesn't do any good, because the racket goes right through them. 
Marble bathrooms, free internet, and high tech TVs aren't much use if you can't get a good night's sleep. I'm not a particularly light sleeper and this isn't a close call. It was really loud and kept me up.