The Migros school is known for it's affordable language classes in the area (check out the website…read morefor a location near you). However, upon signing up for a french lesson I found out that they also offer courses in cooking, dancing, etc. You can take a test on-line to help you determine which level of French to take. If you sign up for a course, and end up not liking it, they won't reimburse the amount, but will put the money towards the purchase of an alternative class.
This location is in a older building, and the classrooms are located on several floors which you can get to by climbing a very narrow stair case. Most of the classrooms are smaller and nothing special.
It would be hard to rate the school dependent on your experience with the teacher, materials, etc. Overall, my French course was OK. I had no complaints and the administrative office was always very helpful, and there was always someone available to speak English if necessary. From my time spent comparison shopping, it definitely stood out as the most affordable with consistently average-good user feedback for French