AC Hotel by Marriott St. Louis Clayton has a fitness center, shared lounge, a terrace and restaurant in Clayton. This 3-star hotel offers a 24-hour front desk, a business center and free WiFi. Guests can use a bar. The hotel offers a buffet or American breakfast. St. Louis Gateway Arch is 11 miles from AC Hotel by Marriott St. Louis Clayton, while Hollywood Casino St. Louis is 17 miles from the property. St. Louis Lambert International Airport is 8.1 miles away.