After an $11 cab ride from Reagan national you arrive at a basic but clean Residence Inn.
Good size rooms for a family of 3, with kitchen in room, breakfast included and free wifi all for $99 a night. Clean and well fitted out. Would have asked for a room away from elevators as could hear the bing every time the door opened but nothing my ear plugs didn't solve.
Great value and 1 block from the Metro. Couldn't have asked for more and would stay again next time I visit.