I am a frequent business traveler. There is a convenient shuttle from Dulles airport. With my surprise upgrade, my room was quite spacious and comfortable. The staff is friendly and responsive. They seem to really want you to have a good stay. This is definitely not the case everywhere. The concierge lounge (for Hilton Honors members) is fantastic. They provide a full breakfast, light dinner with cocktails and non-alcoholic beverages throughout the day. Our host, Angela, went out of her way to get soy milk for my breakfast because of my dairy allergy. The Hilton Dulles is my go-to hotel when I'm in the area.