Very convenient to Metro - you have access to the Metro right from the hotel elevator. That makes it a great location for getting anywhere in DC and is only one stop from Reagan Airport. The Gym is of good size and is well maintained. The rooms are very dated. The wall coverings are 20+ years old and the room I was in had a noticeable stain on the rug and a wet hand cloth left behind the shower curtain. In addition the garbage was not removed the next day. I would choose the JW Marriott downtown if available and in your price range. I have stayed at both and it is nicer, feels new, and more expensive. The Crystal City Marriott does have easy access to the Mt Vernon running and biking trail only a 3 minute run away for access. Staff was very helpful and attentive at Crystal City Marriott.