Pumarin, another new 5 stars sauna ( based on reviews by Thai cruisers on a Thai message board ) just opened last week.
Fee : 120 baht.
Mon, Wed, Fri : Underwear night
Tue, Thu, Sat : Naked zone after 8 pm
It also has sexual massage services ( separate section from the sauna but in the same compound ):-
800 baht for a massage ( buy one get one free for next time until 1 Nov )
minimum 300 baht tip
500 soft sex
1,000 hardcore.
Sauna staff are Cambodian ex-construntion workers. Masseurs are Thai with upcountry looks.
Website and Map :
http://www.thepumarin.com