Most of the time I attend the courses in the studio in Poppenbüttel, occasionally a workshop in Ahrensburg. I can heartily recommend the studio, the teachers I have met so far are all great. The building doesn't present a promising sight above a car dealership, but the lovely first floor studio is really inviting. Usually the courses are not too crowded and because you don't have to register, it's nice to know that there's always a place for my mat.