In Zelenyy Island, a hotel needs to provide a certain number of upscale amenities to earn a 5-star rating. These can 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 guest-focused service. You can expect things like concierge services, nightly turn-down services and in-room massage. Some may also offer thoughtful touches such as a welcome gift.