In Chongsan, a hotel needs to provide a specific number of upscale features 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 exceptional standard of service. You'll enjoy things like nightly turn-down services, concierge services and in-room massages. Some may even offer thoughtful touches like welcome gifts.