NEW BKK sauna-the last years only closures to b reported, but on gthai.net there is now:
WATERBOY; on Ram II, soi 19, in faraway bangMot, same rd as MaleBox, but other side and a little closer to centre city. Strangely the link lead me to a Spanish version of its fb-page.
@Boulder:
AFAIK, but I am no Phuket fan at all, there is just 1, if at all, sauna in HKT, so not much choice.