I'm thinking of booking this hotel for my son and girlfriend. They are travelling overseas for 6 days. Would they be allowed to leave their car at hotel and take the shuttle back and forth?

There is a free open air parking lot adjacent to the hotel where you can leave your car while commuting via other means.

Hi Susanne, If your son and his girlfriend are coming here from overseas and staying at the hotel (I think this is what you meant), there is no charge to leave the car at the hotel as they leave and return, for the duration of their stay. I've actually done this myself, commuting from Washington and back to the hotel, daily.

If you book their Park 'n' Fly Package their car can be left at the hotel and their shuttle will transport them to and from Dulles Airport.