In Nanga Salu, a hotel needs to provide a certain level of high-end amenities to earn a 5-star rating. These can include on-site gyms, saunas and spas, gourmet restaurants, luxury toiletries, premium bedding and more. What also sets 5-star hotels apart is their superior service. You can expect things like nightly turn-down services, concierge services and in-room massages. Some may also offer thoughtful touches like a welcome gift.