In Ertebølle, a hotel must offer a certain amount of top-notch amenities to earn a 5-star rating. These can include gourmet restaurants, saunas and spas, on-site gyms, complimentary luxury toiletries, premium bedding and more. What also sets 5-star hotels apart is their exceptional standard of service. You can look forward to things like in-room massages, nightly turn-down services and concierge services. Some may even offer additional touches such as welcome gifts.