Spent the morning of my birthday here with friends and had a great time, having a drink while relaxing in an outdoor lake of warm water, while everywhere else outside is freezing was a great experience. helping ourselves to the face masks, and making use of the sauna and steam room all added to the fun.
The staff in the changing room were a little intimidating insisting on us showering naked before putting our costumes on and going into the lagoon which seemed a bit pointless. Don't bother hiring a robe unless you plan on spending a long time there and having treatments as they work out expensive for a short visit, take your own towel.
Relax and enjoy this amazing place I'm sure there is nowhere esle like it.