I have been doing Bikram Yoga for a few years and been going to this studio for 8 months.
All the teachers are great and they always care about every student in the studio from beginners to the experienced. I feel I am always get helped to improve my postures because even when there are many first-timers in the class that the teachers have to pay extra attention to for their safety (seriously, you can pass out and fall on the floor if you do something wrong), I still get corrections, compliments or comments on my postures.
They often have guest teachers or new teachers who teach for a certain period of time in addition to regular teachers, and I really like that too because taking a class with a different teacher is always a different experience and I can find something new.
They are always trying to improve the service. Recently 60 mins of express classes are added, and they decided the time of those express classes based on survey from students. 90 minutes is a big commitment (I think all Bikram Yoga classes in the world are 90 mins of series with same postures except advanced ones), so it is very nice that you can take a quick class at lunch time or before work.
I have been to a couple of other Bikram yoga studios when I traveled to different cities / countries but Bikram Yoga Green Valley is the best!
Oh, and they have a beautiful hard wood floor in the studio while most of other studios have carpet floors. I cannot go back to a stinky carpet studio anymore!!