With a stay at Castilla Termal Balneario de Solares in Medio Cudeyo, you'll be near the beach, within a 10-minute drive of Cabarceno Natural Park and Bay of Biscay. This family-friendly hotel is 10.8 mi (17.3 km) from Santander Ferry Terminal and 12.8 mi (20.6 km) from El Sardinero Beach.

Make yourself at home in one of the 113 individually decorated guestrooms, featuring minibars and flat-screen televisions. Your bed comes with down comforters and premium bedding. Rooms have private balconies. Complimentary wireless internet access keeps you connected, and digital programming is available for your entertainment. Private bathrooms with bathtubs or showers feature complimentary toiletries and bidets.

Relax at the full-service spa, where you can enjoy massages, body treatments, and facials. You're sure to appreciate the recreational amenities, including hot springs, an indoor pool, and a fitness center. This Belle Époque hotel also features complimentary wireless internet access, concierge services, and babysitting (surcharge).

For lunch or dinner, stop by El Manantial, a restaurant that specializes in local cuisine. Dining is also available at the coffee shop/cafe, and room service (during limited hours) is provided. Relax with your favorite drink at the bar/lounge or the poolside bar. Buffet breakfasts are available daily from 8 AM to 11 AM for a fee.

Featured amenities include a business center, complimentary newspapers in the lobby, and dry cleaning/laundry services. Guests may use a roundtrip airport shuttle for a surcharge, and self parking (subject to charges) is available onsite.