Nice Road. 3 stars seems fair, 4 star in places for an Englishman not used to flowing empty tarmac.
We rode on the last part D916/D579 through Lisieux up to and over the Pont de Normandie which itself is worth a look.
Roads normally get better as you head south so I think Ill take Yipman76s recommend on that part. The top part certainly makes the ride back to ports more interesting.
Route départementale, voie rapide, passage en sous bois, traversé de village.