French lessons: centre/Ixelles

Can anyone recommend a good language school for evening classes in French, either in the centre of town or in Ixelles?

Ideally I am looking for somewhere with a friendly and sociable flavour, so it can be a way to meet other expats as well as improve my French. Also it should have a good 'rapport qualité-prix' (see, I know a few words already!)

Many thanks for your recommendation.
NJ