I stayed at this hotel last month for two nights. My room was clean and comfortable and the staff was incredibly welcoming and friendly. The hotel is located directly across from the Rosslyn metro station, which was really convenient for getting to and from both the airport and the Mall for most of the attractions, as well as Old Town (a 10-15 minute ride to most). The metro is easy to navigate and being this close to it has to be one of the biggest draws. It seems to be located in a business district (Boeing is right across the street), so it was very quiet most times and I honestly didn't explore the neighborhood much since I was mostly in DC itself. There seems to be a number of restaurants close by as well as your usual fast food places,so if you're inclined to stay in the area, there won't be a shortage of places to eat.
The elevators lock down after a certain time (8?) and need your key card to operate. I learned this embarrassingly enough by standing in a non-moving elevator for about 3 minutes until another guest came in and showed me how it was done. The only hitch during my stay was that the elevators broke down one evening and I was on the 12th floor, but this was remedied very quickly.
I would definitely stay here again on another trip and would recommend it to anyone.