In Psara, a hotel must provide a specific amount of upscale amenities to be rated 5 stars. These can include gourmet restaurants, on-site gyms, saunas and spas, premium bedding, luxury bathroom products and more. What also sets 5-star hotels apart is their extraordinary service. You'll enjoy things like in-room massages, concierge services and nightly turn-down services. Some may also offer extra touches like welcome gifts.