Marriott St. Louis Airport features an indoor pool, a gym, and conference space. If you drive, self parking is USD 16 per night, or you can take advantage of the free airport shuttle (available 24 hours). Multilingual staff at the 24-hour front desk can assist with luggage storage, dry cleaning/laundry, and securing valuables. Additional amenities include a business center, express check-in, and express check-out.