Recommended French sites on Atlantic Coast

Complete newcomer to a small Volkswagon Autospleepr Trident. Really thrilled with this new experience and learning a LOT and a LOT more to learn!!

Hope to travel to the east coast of France in May of next year for 2/3 weeks and wanted to pick up any recommendations for sites for just myself partner and small dog. Near to the beach, not too noisy but with good facilities, preferably a pool and  we like visiting places of interest and walking. Any ideas!?

Much prefer to go on recommendation,

Thanks in anticipation-from a complete, but exicted, novice.

Chris Miller/Janet Church