Holiday Inn St. Louis West Six Flags, an IHG Hotel puts you just a 5-minute drive from Six Flags St. Louis. The indoor pool is a great spot to take a dip, and guests can grab a bite to eat at Haymarket Restaurant, which serves American cuisine and is open for breakfast, lunch, and dinner. A poolside bar, a fitness center, and a spa tub are other highlights. Fellow travelers love the pool and helpful staff.