We thoroughly enjoyed our stay at the Ritz-Carlton in Pentagon City in June of 2012. The location was the key factor in our selection process, including the proximity to the metro stop. We were able to travel into the heart of DC without difficulty, either via metro or taxi, and were very happy with the number of excellent restaurants and shops located around the hotel for the nights we needed to be closer to the hotel.
In terms of the hotel property itself, the rooms and amenities were fine. Cleanliness was never an issue, and the staff was more than happy to accommodate any requests we had. We also enjoyed the small workout facility inside the hotel.
Great location, great staff, perfectly fine hotel. Will visit again.