In Russian Caspian Sea Coast, a hotel is required to offer a certain number of upscale conveniences to be rated 5 stars. These may 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 standard of service. You'll enjoy things like nightly turn-down services, in-room massages and concierge services. Some may even offer additional touches such as welcome gifts.