Re: Intensive german course- Basel
I don't know 2 weeks intensive course. Usually 1 level takes 2 months. It's the shortest.
If you are looking for more convenient course, you can go to Germany (Loerrach, Rheinfelden, Weil am Rhein). It's 20 min from Basel but prices are not so high both in private schools and VHS (schools for adults, where they also have intensive courses).
You can also look for private lessons. Price in germany around 30 chf/45 min.