In St. Peters, a hotel is required to offer a specific amount of upscale amenities to be rated 5 stars. These can include saunas and spas, on-site gyms, gourmet restaurants, premium bedding, complimentary luxury toiletries and more. What also sets 5-star hotels apart is their exceptional standard of service. You'll enjoy things like in-room massages, nightly turn-down services and concierge services. Some may even offer additional touches such as a welcome gift.