Guests of Marriott Marquis Houston have access to a full-service spa, 2 outdoor pools, and a lazy river. Valet parking is offered for USD 70 per day. The front desk is staffed 24/7 to help with dry cleaning/laundry, securing valuables, and luggage storage. Other amenities at this spa hotel include a gym, a rooftop terrace, and free WiFi in public areas.