Karina does a great job and her 90 min classes are very tough! I like the dark/disco lighting, it makes it fun and makes you focus on the workout instead of staring at yourself in the mirror. Everyone is super friendly, and the people are there to work out and have fun.
It gets a little hot in there, and the concrete floors are pretty hard for the amount of jumping around, so I'll give 4 stars instead of 5, but it's not so hot that I'm not still going in June, and I just modify the exercises when I want to be a little gentler on my body. If they had better AC/fans and wood floors, it would be absolutely perfect for me!