Do not stay here, but do attend meeting here
This is a historic hotel in a great location. The location means that the banquet rooms on the 9th floor have a great view of the White House and Washington Monuments...even a terrace to view them. I attended a meeting here and was also impressed with the service provided by the people who provided food, drinks, etc. Of course, the banquet food was uninspiring, but one can live with that. Now a reality check: 
DO NOT STAY HERE. I had the opportunity to see two rooms...both filled with a moldy smell when you clicked on the air conditioning. Want creaky floor boards? This is your kind of place. And, the rooms do not in any way measure up to typical size standards for a luxury hotel...even in a crowded city like D.C. After sampling those two rooms, I was offered the chance to play room roulette and get transferred to another room again. No thanks, I said. And, I simply made a reservation at the much superior JW Marriott a few blocks away. No muss, no fuss there. And it is truly a luxury hotel.
Bottom line: If you have an opportunity to attend a meeting at this very old historic hotel, please do. It is like going to a museum in some respects. But, please let me repeat, DO NOT STAY HERE!