In Changwon, a hotel must offer a specific amount of high-end conveniences to be rated 5 stars. These can include on-site gyms, spas and saunas, gourmet restaurants, premium bedding, luxury bathroom products and more. What also sets 5-star hotels apart is their extraordinary service. You can expect things like concierge services, nightly turn-down services and in-room massage. Some may also offer special touches like welcome gifts.