A bit late here, but I agree with MissPrincepessa, about the Yoga Room. They're still too pushy for the "sale" (tho *maybe* a tad less pushy than what I've seen at some other local small & unprofessional yoga studios) -which always worries & annoys me, and they had the "hidden cost" of a joining fee that they'll only mention after the trial class. It's a shame the sales tactics are so poor, because the class itself was actually quite good.
Anyway, as I shared elsewhere:
I tried a prenatal yoga class at The Yoga Room today and learned that the first trial class is free (with HKID), and then they have package or membership options to choose from. Found out after the trial class that there's also a joining fee (that's only waived if you sign up for a pkg that day). But the teacher was good & attentive, class was small, and generally inviting.