In Flat, a hotel is required to offer a certain amount of high-end amenities to be rated 5 stars. These may include gourmet restaurants, saunas and spas, on-site gyms, premium bedding, complimentary luxury toiletries and more. What also sets 5-star hotels apart is their guest-centric standard of service. You can expect things like concierge services, nightly turn-down services and in-room massage. Some may also offer thoughtful touches like a welcome gift.