There’s an easier way to chill out on the Algarve coast than hit the beaches crowded with packs of overheated tourists. The region in the south of Portugal has become a go-to destination for spas, where you can relax with a grape mask, a seaweed wrap or even a “Siberian-Caribbean shower experience.” Less than 200 metres from the sea near the Algarve’s tourist capital, Albufeira, the five-star spa resort Grande Real Santa Eulália is tempting people with its thalassotherapy, which is based on the therapeutic benefits of sea water. There are pools for curing everything here — in one pool, counter-currents make it difficult to swim and underwater jets are designed to massage specific muscle groups. Elsewhere, bubbling baths and waterfalls soothe .....