In Salles-Adour, a hotel must provide a specific number of upscale amenities to be designated 5 stars. These can include on-site gyms, spas and saunas, gourmet restaurants, luxury toiletries, premium bedding and more. What also sets 5-star hotels apart is their superior service. You can expect things like concierge services, in-room massages and nightly turn-down services. Some may also offer additional touches such as a welcome gift.