Hey, I came across this post last year and as well as another one, and I wanted to share findings.
I was in a similar situation. Plus I am a man, and was not naturally drawn to the concept of pilates.
I was introduced to a modern version of pilates with machines that make the task actually much more focused and less of an ordeal. And enjoyable for that matter.
I went to LiveFit, near the Altstetten station. The space is really nice and classes are given in English (the ones I took at least).
https://livefitstudio.ch
Good luck if you still need to find a solution!