Paraiso, which bills itself as the largest and safest sauna in Madrid, fills 1,400 square meters (15,000 sq.ft.) with 30 private rooms, three dark rooms, sauna, steam, heated pool, jacuzzi, cinema, a dance floor and bondage area with cell bars, rack and swing.Open 365 days a year, it caters to younger guys. Other saunas in the group are Octopus tailored for bears and Principe for more experienced clients. 

saunaparaiso.com