In Curtis, a hotel needs to offer a certain amount of upscale conveniences to earn 5 stars. These may include on-site gyms, saunas and spas, gourmet restaurants, premium bedding, luxury bathroom products and more. What also sets 5-star hotels apart is their guest-focused standard of service. You can expect things like in-room massages, nightly turn-down services and concierge services. Some may also offer extra touches such as welcome gifts.