Learning French in France (Strasbourg)

I need suggestions on reliable, reputable and affordable language schools in France.

I wish to spend as much time in France as possible in order to get the full advantage of immersion. For this reason, Paris maybe out of the question.

By the way, I have come across a school called Alfmed in Perpignon. Have you ever heard of it? What do you think of it?

Sze-Leng