In Duke, a hotel needs to provide a specific amount of high-end amenities to be rated 5 stars. These may include on-site gyms, gourmet restaurants, saunas and spas, premium bedding, complimentary luxury toiletries and more. What also sets 5-star hotels apart is their extraordinary standard of service. You can expect things like concierge services, in-room massages and nightly turn-down services. Some may even offer special touches such as welcome gifts.