Hi Jo.
We stayed on this site last summer for 10 days, and it was fab.
We had a full service pitch right at the back of the site which is the newest part, and the toilets etc in that area are new too of course.
The pool is fabulous, clean and just a very nice area with the bar/restaurant adjacent to it.
We were shown to our allocated pitch on arrival of course, however we were not completely happy with that one and were able to spend time and pick a pitch of our own choice which was very good.
Turn left out the gate and travel for a couple of hundred yards to the shops bars and beach.
The beach front in St Jean de Monts is truly spectacular, just wonderful sand for miles and miles, with lots of parking on the promenade.
There is a good choice of supermarkets here as well. This is a very touristy area though with not that much to "interest" you if you know what I mean, but if it is sun sand etc you seek you will love it.
The Vendee is in its own micro climate and we had wonderful weather the whole time we were there - stock up on the sun tan lotion - it gets really hot.
We are off to Brittany this year for a wee change, but may well venture down as far as the Vendee again for the weather if need be.
Have a fabulous holiday.
James n Yang