In Čornaja, a hotel must offer a certain level of upscale features to earn 5 stars. These can include on-site gyms, gourmet restaurants, saunas and spas, premium bedding, luxury bathroom products and more. What also sets 5-star hotels apart is their outstanding service. You can expect things like nightly turn-down services, concierge services and in-room massages. Some may even offer additional touches such as welcome gifts.