Stayed for a small convention and this property meets your expectations for a Hyatt Regency property that is intended for business travelers. Higher end, but not top drawer. Service and amenities are very good.
Upside is that it sits at the edge of Reston Town Center and is a very short walk to many high and shops and good restaurants.
A couple of gripes. Clock in the room was not lit and could not be seen without turning on a lamp. Gigantic hair in the tub! Room not cleaned until 3:30 in the afternoon. Dirt/fuzz in the in-room coffee cup.