In Linn, a hotel needs to provide a specific amount of high-end amenities to be rated 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 guest-centric service. You'll enjoy things like concierge services, nightly turn-down services and in-room massage. Some may even offer extra touches like a welcome gift.