I had a conference at the Mariott across the street, but we decided to find different lodging. My daughter found this place and it couldn't have been better! The Metro stop is across the street, with easy access to everyplace in DC (well, maybe not Georgetown). The rooms were perfect (no TV, but I couldn't care less), free WiFi, friendly staff, nice breakfast.
I travel to DC on business once or twice a year, I will definitely stay here again regardless of the location of the meeting.