In Dong Khoi, a hotel is required to offer a certain amount of top-notch amenities to earn 5 stars. These can include on-site gyms, gourmet restaurants, saunas and spas, premium bedding, luxury toiletries and more. What also sets 5-star hotels apart is their outstanding standard of service. You'll enjoy things like in-room massages, concierge services and nightly turn-down services. Some may also offer additional touches like welcome gifts.