In Ban Na San, a hotel needs to provide a specific level of upscale features to earn a 5-star rating. These can include on-site gyms, gourmet restaurants, saunas and spas, premium bedding, luxury bathroom products and more. What also sets 5-star hotels apart is their superior standard of service. You can expect things like in-room massages, concierge services and nightly turn-down services. Some may also offer thoughtful touches such as welcome gifts.