Just a bit further away, but great location and roads together with Nigel & Carole’s hospitality is https://www.maisonlaudiere.com/directions/
Numerous Tossers have stayed there as have I and a friend and would happily go back.
A bit further away? It’s 110 kms due south of the coast at Arromanches. I’m far from convinced the OP will want to hoon a 220 km or further round trip each day of his holiday.
OP, the Arromanches place seems to be coming out tops, if you want somewhere ‘biker friendly’ and ‘safe’. It’s conveniently placed, so book it up quick before hordes of other bikermates get their dusty Adventure boots under the table and onto the bedspreads. Much of the same in this thread: http://www.ukgser.com/forums/showthread.php/470829-Trip-to-DDay-beaches?p=4938665#post4938665