In Onawa, a hotel must provide a certain level of top-notch amenities to earn a 5-star rating. These may include saunas and spas, on-site gyms, gourmet restaurants, premium bedding, luxury bathroom products and more. What also sets 5-star hotels apart is their extraordinary service. You can expect things like nightly turn-down services, concierge services and in-room massages. Some may also offer additional touches like a welcome gift.