We stayed here for 5 nights in February. Our stay started off on the wrong foot. We had reserved a room with two double beds but when we arrived they only had king beds. There were other people in the same situation and the only solution offered was to stay at a nearby Marriott instead. We had kids in tow and just wanted to settle in so we took the king room with assurances that they would switch us to a room with double beds the next day. When I stopped by the desk the next day I was told again that the room we had reserved still wasn't available and I should stop by the next day. The next day I was offered the right room with a city view but got a room with a view of a brick wall. Another trip to the front desk and we finally got good service and a very nice room, but three of our five nights were in the wrong room.
Putting aside the poor service at the front desk, we liked the hotel. The breakfast buffet was very good though the layout is poor and slows the lines down (there's a right-angle turn in the buffet which becomes a bottleneck and the line crosses into the dining room when it gets busy). We stopped by the manager's reception a couple of nights after dinner and appreciated the free glasses of wine. The kids enjoyed the pool, though it's only big enough for about 8 people before they're all crashing into each other. The spa broke during our visit which was a disappointment because we enjoyed warming up in it after swimming.
The location is very good and is within walking distance of a lot of attractions. We walked to the White House and the Spy Museum. Our kids are small so we took taxis to spots further away but adults could easily walk to the Mall and Capitol from the hotel. (An aside for families considering whether to use the bus system: Our average taxi ride was about $8 before tip. Taking the bus for a family of 4 would cost about the same and you would have to pay $20 for four empty Smartrip cards on top of whatever cash you load onto them. So for about the same cost as the bus you get door-to-door service from the hotel to wherever you're going. The taxi drivers in DC are friendly and take you directly where you're going, which you can't always count on in other cities.)
The hotel was incredibly clean and besides the troubles we had with the front desk, all of the employees we talked with were very friendly and helpful. We will probably stay here again when we come back to Washington. It's unfortunate that so many of the rooms face another building so they have absolutely no view (a view of a parking lot would better than looking at a wall that is ten feet away from your window). I know that the hotel has no control over that but it's something to be aware of when booking and when checking in; be sure to ask for a room on the front of the hotel.