If you want to learn Muay Thai, this is the school you want. Kru Nick (the teacher) has dedicated his life to the study and teaching of Muay Thai, and his love of martial art shines through in every session.
I've trained at a few other gyms that purport to teach "Muay Thai", but you can tell that the instructors often assign drills and exercises without knowing the rationale behind them or knowing how to correct form. Everything in Muay Thai, down to the way you stand, has a purpose. Kru Nick has an amazing ability to explain the reasoning behind everything you are learning, and keeps track of each student's progress and learning style so that you get the most out of the training.
If you just want a workout, than any "gym" will do. But if you want to learn the art of Muay Thai, then you need to check this SCHOOL out.