I drive as far as possible through the night so use sandwiches as facilities are poor in France at this time.
From my LGV driving days I recall a good restaurant in a village called Angliers further on from Distre(mentioned above)towards Poitiers.This used to be a good straight road but now has numerous roundabouts.
I also like the Relais de Saintonges in St.Genis.It used to be known as Claude’s and was around 9 hours from Cherbourg.They do B and B too if required.