Guests staying at Courtyard by Marriott Detroit Metropolitan Airport Romulus enjoy an indoor pool, a gym, and free WiFi in public areas. If you drive, self parking is USD 8.00 per night, or you can take advantage of the free airport shuttle (available 24 hours). Front-desk staff can answer questions 24/7, and assist with dry cleaning/laundry, securing valuables, and luggage storage. Additional amenities include a 24-hour business center, express check-in, and express check-out.