I've never done Bikram, but I saw the awesome groupon and new it was a sign to check it out.
The facility is gorgeous, like a hipster spa. The building it's in is the Carson, downtown. The only downer, with all things Downtown, is the parking. That said, it's not been too difficult for me as I had been going mid-morning during the week. It will be an issue for the after-work yogis.
The instructor I've had has been Mario. He is AWESOME. He's humorous, yet very helpful with noobs like me. He's respectful of his craft, but doesn't take himself too seriously. If you have reservations about trying this out, go to his classes.