Parking at Comfort Suites Chantilly was a breeze. The front desk was very friendly and helpful. The only reason I give 4/5 stars instead of 5/5 stars to the shuttle and schedule is because they do not operate from 2pm-3pm. I knew of this in advance, but when my flight arrived later than expected, I was stuck taking a cab. Just something to pay attention to, not necessarily a complaint. Overall, completely satisfied. This was my 5th or 6th time using Book2Park at IAD or DCA, and have been pleased every time.