I would stay away from Room 224. Maybe I just had a bad experience, but I was surprised to find old stains on the towels and bed sheet. Also, the shower head and bathroom trash can were rusted. Since 224 is directly above the dining area, there was a loud humming sound coming from the dining sound until about 9:30-10PM. I do have to give credit to the front desk though - because they listened to my complaint and assured me that it would be taken care of immediately (and that's why I gave 3 stars instead of a lower score).
One other note is that my party arrived late (10PM from Dulles), and when we brought food back to the hotel, we were told that we could not eat it in the front lobby area after 10PM, so we ended up eating in our room - no big deal since conversational noise would probably drift up to the other floors since the rooms all face the courtyard.
The room itself was quiet after 10PM, and the bed was comfortable. The free breakfast was also fine. I would probably try staying there again, but definitely in a different room.
Room Tip: Stay away from Room 224 since it's right above the dining area.
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This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC