At Residence Inn by Marriott Dulles Airport At Dulles 28 Centre, guests enjoy an indoor pool, a gym, and free WiFi in public areas. You can take advantage of free parking, along with a free airport shuttle (available on request). The front desk has multilingual staff standing by 24 hours a day to assist with dry cleaning/laundry and securing valuables. Additional amenities include a business center, coffee/tea in a common area, and a meeting room.