We had a good time at a place called Fort Mahon Plage.
It's a seaside tourist resort and busy in the summer but the Aire is large and probably 10 restaurants within a 5 minute walk.
So it might not be as quiet as you want in season but this time of year I would have thought it good.
Le Torquet is nice upmarket place, there is a beach side restaurant near the Aire but the town itself is a fair walk but it's lovely either trough the woods or streets being nosey at the houses.
Rolling on and enjoying life on the road