Some questions about women at the "gay" clubsя╝Ъ

During my last visit to Bangkok, I noticed that groups of straight women (especially Asian women) now seem to go to the "gay" clubs to off the guys.
Is this still the case at Jupiter and some of the other bars that have handsome, masculine guys?

Do women have their own clubs to off guys? I have seen several ads for a place called Castro, and have seen photos of the handsome guys that work there. Is this place just for women? Or are gays also welcome to go there, take a look, and off the guys. Has anyone been there?

I have never noticed women at the massage parlors such as Hero. Are the massage parlors just for men? Or can women come and get some guysя╝Я