In Azo, a hotel must provide a certain number of high-end conveniences to be designated 5 stars. These can include on-site gyms, saunas and spas, gourmet restaurants, complimentary luxury toiletries, premium bedding and more. What also sets 5-star hotels apart is their extraordinary service. You'll enjoy things like nightly turn-down services, concierge services and in-room massages. Some may even offer special touches like a welcome gift.