In Sankt Martha, a hotel needs to provide a certain level of high-end conveniences to be designated 5 stars. These may include on-site gyms, spas and saunas, gourmet restaurants, luxury toiletries, premium bedding and more. What also sets 5-star hotels apart is their outstanding service. You'll enjoy things like in-room massages, nightly turn-down services and concierge services. Some may even offer thoughtful touches such as a welcome gift.