In El Castillo de las Guardas, a hotel is required to offer a certain level of high-end conveniences to be designated 5 stars. These may include on-site gyms, saunas and spas, gourmet restaurants, premium bedding, complimentary luxury toiletries and more. What also sets 5-star hotels apart is their extraordinary service. You'll enjoy things like in-room massages, nightly turn-down services and concierge services. Some may also offer additional touches like welcome gifts.