Coastal stopover(s) en route from Pisa to Ventimiglia

In June we arrive in Pisa for 8 or 9 days. After that we'll make our way west by train along the coast. I'm interested in suggestions for a coastal stopover en route to Ventimiglia on the French border- a cute beach town to relax for a couple of days after a week of day trips from Pisa. (Not one of the 5 terras.) Ultimately we'll arrive at Agde on the French coast. TIA.