How are the changing rooms? One big open area or private showers?
Yes, there are very nice changing rooms with free lockers. The men's shower area has a single stall at the end with a curtain, but most of showers are communal. They are rainfall heads though and the shampoo, conditioner, and shower gel are exceptional.
Get quick answers from Laugarvatn Fontana Geothermal Baths staff and past visitors.