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