I can very highly recommend Martha: http://www.marthas-studio.ch/html/kontakt.htm. She does individual or pair training and it is the real thing. She's Canadian, I think, and has all the equipment. If I lived in Zürich, I would still be taking lessons with her. Her place is just past Enge. I was pretty disappointed with some other classes I took in Zürich; the teachers didn't have much experience and/or knowledge. Martha doesn't let you get away with anything and puts absolute focus on correct form and position (which is everything in Pilates). Really, I can't say enough good things about her.