We attended a wedding reception in Reston Town Center and decided to use it as an excuse to stay the night. We've stayed at Hyatt Regencies in the past with mixed reviews (Belleview, WA -- excellent, SF -- just average) but the Hyatt Regency in Reston was excellent. The hotel was very nice and clean. The room looked almost new and the bed was very comfortable. The location was perfect for us as the hotel is in the Town Center which has many restaurants. I don't think I would use this hotel as a base to visit DC though as it is a bit far. There was free parking and we paid a small amount extra for the "Breakfast Rate". The breakfast was very good and worth the minimal rate increase. (I wouldn't pay the stated price on the menu though which was ~$20.) Our room was ~$129 and we thought the price was quite reasonable.