In Only, a hotel is required to offer a specific amount of top-notch amenities to be rated 5 stars. These can include on-site gyms, spas and saunas, gourmet restaurants, complimentary luxury toiletries, premium bedding and more. What also sets 5-star hotels apart is their exceptional standard of service. You can expect things like nightly turn-down services, in-room massages and concierge services. Some may even offer thoughtful touches like welcome gifts.