I work for a software firm in Reston, VA and have to travel to DC on a regular basis. I have stayed at this hotel at least twice a month for the past year, and it has been great. The staff is very friendly, the rooms are large and clean, and the breakfast and evening reception are a great way to start/end your day.
The hotel is right off the Dulles toll road, so it only takes 5 minutes from the Dulles airport, and it is a straight shot into Tysons, Arlington, or DC.
The few times I have had a problem, the management has taken a personal interest in it and it has been resolved quickly. I would highly recommend it for road warriors or families.