In Sangmi-ri, a hotel needs to offer a specific number of upscale features to be designated 5 stars. These can include on-site gyms, gourmet restaurants, saunas and spas, luxury toiletries, premium bedding and more. What also sets 5-star hotels apart is their guest-centric service. You can look forward to things like concierge services, in-room massages and nightly turn-down services. Some may also offer additional touches such as welcome gifts.