I started using leela eco spa several weeks ago with an amazing living social deal (20 classes for $20 I believe) and I was not disappointed. I am still a beginner yogi, having just started yoga this past year, but I found there are several classes suited to my skil level and at convenient times for a Monday to Friday working girl like myself. I've gone to classes taught by two of the instructors, and both seemed very kind and knowledgeable. My living social voucher is now up but I'll be signing up for more.
As an Added bonus, I can chose to pay for unlimited yoga or punch cards - nice to have the flexability!