Just had a look at that website it looks nice
What level of French do you speak at the moment? I wouldn't underestimate how good you could get in three months actually, the key is using it constantly and in real life situations. The bit where they can put you up with a local family sounds like it would be really invaluable.
What location were you thinking of? Of the ones on that site, steering clear of Paris might be best - too big and too easy to get away without speaking French. Especially in the summer. Tours is very nice. Bourdeaux is ok, but smells of fish...
What level of French do you speak at the moment? I wouldn't underestimate how good you could get in three months actually, the key is using it constantly and in real life situations. The bit where they can put you up with a local family sounds like it would be really invaluable.
What location were you thinking of? Of the ones on that site, steering clear of Paris might be best - too big and too easy to get away without speaking French. Especially in the summer. Tours is very nice. Bourdeaux is ok, but smells of fish...