Aisia Islares Spa Hs Situated in Castro Urdiales, the Aisia Islares Spa Hs provides 2x000D star accommodation. Both on and off site car parking is available at the hotel. Hotel guests can enjoy a meal at the restaurant on site. Meeting facilities and wifi are available. Room Features Aisia Islares Spa Hs. Smoking in certain bedrooms is allowed, as well as in public areas of the hotel. Please specify when booking if you require smoking. Leisure Info. The Aisia Islares Spa Hs offers guests a selection of leisure activities and facilities. A luxurious range of spa treatments including beauty, massage and sauna is available. Guests can relax in the hotels indoor swimming pool.