If the millie is like the Summit, her sister this is what you will find.
The men have a dry sauna that has a big window looking out on the sea. Guys were either in swim suits, towel or nothing....mostly nothing.
The other facilities are coed.....swim suit. I did see people with what appeared to be only a towel and or terry robe. This coed facility costs to use...suggest a weekly pass.
There is a very dark turkish (steam bath) with changing color lights in the ceiling. Then there is a foom with heated seating covered with mosaic tiles and a fountain in the center. This is really nice for conversation........the "boys" seem to congregate there. it is radiant heating you sit on.....very different. Last there is a small steam inhilation room, small and was quite bright. Lastly there are two showers one with scented water, another was like a rain shower type of fixture, very nice.
The dry sauna seemed to be the place...then people would move across to the coed facility for continued conversation.
Hope this answers your questions and is acceptable in content to all readers.