Site south of rouen recommendation please

charsean

good afternoon

I'm biting the bullet next year and taking the caravan to france for the first time. We're taking the eurotunnel to calais and travelling to saumar . We want to stop about halfway on the a28 just south of rouen and I'm looking for a nice stop over site that's
not too far from the main road . Do any of you have any recommendations please. 

Thank you for your time