We just returned from a three night stay at the Residence Inn in Arlington. We had a two bedroom, two bath suite for my wife, my mother-in-law, and myself. We were a bit apprehensive about staying in Arlington to visit Washington, but were assured by our friends that there is no problem in doing this. Our friends were right. It is only about 15 minutes from the National Mall by either cab or metro. Our suite was spotless, and the rooms were very large. The included breakfast was more than adequate. However, the nicest part of the hotel is the staff. Everybody was extemely friendly, and most helpful. The hotel has a shuttle van that will take you and pick you up from the metro stop, local restaurants, the nearby airport, etc. The service was always prompt - no more than a five minute wait - and with a smile. I definitely recommend this hotel.