In Manggok-tong, a hotel needs to provide a certain number of high-end conveniences to earn 5 stars. These may include gourmet restaurants, saunas and spas, on-site gyms, premium bedding, luxury toiletries and more. What also sets 5-star hotels apart is their extraordinary service. You'll enjoy things like nightly turn-down services, concierge services and in-room massages. Some may even offer additional touches like a welcome gift.