In Perk, a hotel is required to offer a specific amount of top-notch amenities to be designated 5 stars. These may include on-site gyms, spas and saunas, gourmet restaurants, luxury bathroom products, premium bedding and more. What also sets 5-star hotels apart is their superior service. You can look forward to things like concierge services, nightly turn-down services and in-room massage. Some may even offer special touches such as welcome gifts.