Another vote for Serignan Plage. We went in September 2011. The chalet Robinsons were good but I personally would go for one of the ones near the beach. The whole site is so close to the beach you won't be able avoid the sand getting everywhere wherever you are.
Bar area was nice - low key when we were there at the end of September but good atmosphere all the same. Don't know about the restaurant but the take aways were good as was the bakery! You could buy wine en vrac from the pizza place which is a definite plus in my book.
Thanks for that. I have now seen that La Brasilia is booked so it looks like its's Serignan anyway!
We are looking at the sites own accommodation as looks pretty good - some called chalet RObinson near pool. I quite like the ones on the beach and some of these are newer but kids and and DP always moan about sand in toes so prob best avoided!!
Most importantly what was bar area and restaurants like, did you use?!!!
Went to Serignan in 2011 (with Eurocamp). It was great! Our DCs were 4 and 2 then and low season - really good pools and playgrounds, great shops and the 'balneo' spa is fantastic. Not sure what info you're looking for/what your situation is, but if there's any specific questions about it will do my best!