Good location for sightseeing
We stayed here for seven nights in October. We had a one bedroom king suite, which was enormous for two people. The cost was pretty reasonable, considering the facilities, space and location. Staff members were all very pleasant and helpful. 
There was a lounge area (with TV, sofa, two lounge seats, computer desk and chair, etc, etc.); a bedroom (with another TV and plenty of storage drawers); bathroom (divided into a washbasin area with a wardrobe behind folding mirrored doors, and a room with a bathtub/shower and a toilet); and a kitchen area (with a small refrigerator, coffee maker, sink and microwave). We had a reasonable view of the Washington Monument from the window.
The room was kept very clean. When we arrived, there were two bottles of water and two small packets of Oreo cookies, but these were not replaced during our stay. There were also fresh filter coffee sachets, which were replaced.
Generally the room decor was in good condition and comfortable, but the lounge chairs and sofa showed signs of fraying at the edges. The folding door to the wardrobe did not open very well and needed a bit of a heavy push to get it to close. Other than these, everything was fine. We slept well on the very comfortable bed and were not bothered by noise from traffic or other rooms.
The aircon, which was located below two windows, was a little noisy and gave out quite a hefty blast (especially in the bedroom) even when the fan was turned low. This didn't really worry us because the nights were quite mild. Aircon in the corridors was icy! 
The hotel was not too full, and we had no problems with the elevators (even though we were on a high floor). Breakfast was OK and reasonable quality, with fresh fruit, waffles, breads, cakes, pastries, cereals, egg, etc. The serving area was a little crowded at peak times, but we could always find a table; and there were lots of throwaway plates/bowls/cups/cutlery.
We felt safe in the hotel's location. There were Metro stations within a few minutes' walk, and some good restaurants in the area (such as Legal Seafoods and Matchbox). The White House, Capitol, Smithsonian Museums and main galleries were within easy walking distance. The memorials around the Tidal Basin can be reached on foot without too much effort if you are reasonably fit.
Overall, we would be very happy to stay here again.