Hotel Spa in Germany

Berlin

A hotel spa inside The Mandala Hotel in Mitte, Berlin, with sauna and fitness areas, day passes for adults 14 and up.

Baden-Baden, Baden-Württemberg

A hotel spa built into a former bank vault in Baden-Baden, with a vitality pool, saunas, steam room and private suites; day pass costs €79.

Aachen, North Rhine-Westphalia

A suite hotel in central Aachen where each private room has its own jacuzzi and sauna, booked by the night rather than a day pass.