In Oktu-ri, a hotel needs to offer a certain level of upscale conveniences to earn 5 stars. These may include saunas and spas, on-site gyms, gourmet restaurants, premium bedding, complimentary luxury toiletries and more. What also sets 5-star hotels apart is their outstanding service. You'll enjoy things like concierge services, in-room massages and nightly turn-down services. Some may even offer thoughtful touches such as welcome gifts.