It's an easy cab or subway (2 stops) from DCA to the Ritz. The conference rooms are nice as is the lobby (small) and the rooms were comfortable, but not as large or as 'exceptional' as other Ritz Carlton's I've stayed. Staff was very friendly, and food was great. Great place for business meetings. The gym was well appointed, and easy to get to. The pool seemed nice (but small).
The room I had was on the 5th floor, and looked directly onto a flat roof - one of the worst views I've had from any hotel in D.C. Ask for a higher room, or one that faces out the front of the hotel.