I had eight high school groups as guests at the Hyatt Place Chantilly who were participating in the national finals of a very prestigeous constitution focused competition at nearby George Mason University. There were 177 students and chaperones. The hotel facilities, guest rooms, meeting spaces, breakfasts could not have been better! The staff of the hotel could not have been more warmly greeting and quickly responsive to all of our needs and requests. The guest rooms are large, nicely decorated and very comfortable. The large lounge area in each room was ideal for small group study sessions. The breakfasts were superbly prepared. The buffet was fresndhened up continually, hot food was fresh and very delicious. Fruit was freshly cut each day. The lobby is charming...warm, peaceful, with several private sitting areas for a quiet breakfast or drinks in the evening. The hotel is impecably maintained and housekeeping keeps it spotless. The wide selection of restaurants and shops within a very short walking distance were ideal. In summary: top quality hotel facility staffed by dedicated , knowledgable professionals who are always accessible and eager to serve. Will certainly choose this hotel over any others in the area.