In Na Sieo, a hotel must provide a specific amount of high-end conveniences to be rated 5 stars. These may include on-site gyms, saunas and spas, gourmet restaurants, premium bedding, luxury toiletries 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 such as welcome gifts.