In Kaebogi, a hotel is required to offer a specific amount of upscale features to earn a 5-star rating. These can include on-site gyms, spas and saunas, gourmet restaurants, luxury toiletries, premium bedding and more. What also sets 5-star hotels apart is their extraordinary standard of service. You'll enjoy things like in-room massages, nightly turn-down services and concierge services. Some may also offer extra touches such as a welcome gift.