We had a turkish bath two years ago when we were in Icmeler. In fact I think it was at the Club Aquarium.
My hubby, 12 year old daughter and I loved it, however my 8 year old son got quite upset when the time came to actually have the bath, massage etc. In the end he sat it out and watched us have our bath and so on. One things for sure, it's certainly not as relaxing when you've got an eight year old standing next to you who keeps asking when it'll be done so we can get back to the pool!
I do think it depends on the childs nature as my son can be quite shy and doesn't like fuss so with hindsight he was never going to enjoy it.
My husband wants to book one as soon as we get to
Icmeler this year but I think my son and I will give it a miss.