Whether you're single or a couple, Hotel Spa Balneario Puente Viesgo is a great place to relax. They have everything you could want from a spa: sauna, jacuzzi, thermal baths, contrast showers, and something that I really love: a flotation pool.
You can book the spa for you alone or for you and your partner for 45 minutes and relax suspended in the water without anyone bothering you. After a little shower, you can go down to the restaurant and have a luxurious meal with great wine. And all this comes wrapped in a sleek, clean design with wood finishes.