Brittany is FAB!!! Love it love it!! We stayed in a gorgeous camp site a couple of years ago - ds was2.5 and dd was 1.5 and the camp site was just right for them. It's in baden - bit of a drive from the sea but the camp site is 5 mins from the village which had a restauarant, lovely butchers and bakers, PO and tourist office. The pool area was fantastic - the kids pool was just right with a wee slide in it and the main pool shelved very gently from the side so they could just toddle in and out at leisure and we could swim with them round the pool. Thhre was also a separate adult pool. Food at the restaurnt/takeaway was excellent and they wwer very friendly. Local towns fab - little train trips round them (nearest one is Auray which had fantastic kids clothes and shoe shops!!), Vannes is nearest big town. The site ahd 3 fishing lakes and a field neear them with 5 donkes in it. Loads of ducks by the lakes and a couple of wee goats in their own mini field! kids loved it. Excellent play areas.
I wouldn' go for a gite or villa with young kids persoanlly as the company and facilities you get on a camp site make the holiday!! My bf went to a villa and hated it (kids 5 and 3) as she was on pool alert for her 2 the entire time from the moment they first woke up. The kids got bored - the pool was deep all over so no paddling and they required full on adult entertainment constantly! At the cam site they make friends and are entertained! While mummy samples local bread, cheese and wine obviously!
Been to St Jean de Monts year before which was lovely - going back there this year - Camping Acapulco supposed to bewithin walking distance of a beach. Went to Le Guilvenic last year but camp site (village la plage) kids pool was poor but only 2 mins from beach so we had a brilliant holiday.
Try out the Matthews holidays dscussion forum, just post a question and you'll get loads of info.
We like the overnight ferry with cabin I ahve to say. Mini disco for kids (wine for mummy!)and full nights sleep - wake up and it's a couple of hours to the site!
You can use your tesco clubcard vouchers to pay for some ferry routes so worth looking in to - worth 4 x their value as deals!
Bonnes vacances!