Vasco da Gaia prides itself on having Poznań's only isolation tank (you know, one of those floatation tanks with warm water and epsom salt), but their entire offer reveals quite a holistic approach to relaxation: there are Russian sauna treatments with Siberian herb extracts, a selection of massages (some involving chocolate and honey), a Moroccan hammam experience, weight loss programmes, physiotherapy, and psychologists specialising in stress management. All in all, if you're in need of some serious relaxation, this is the place to try.