My wife and I visited CT in early May. Frankly, we were a bit disappointed in all the villages, except Vernazza, which is attractive and quaint. The others have little to offer in that regard. As another individual commented, the trains are too few and too far between, not to mention how hard it can be to determine the schedule.
I will mention that the drive from Pisa to Monte Carlo is spectacular; even on the Autostrada! I’ve never seen so many high bridges and tunnels on such a relatively short stretch. A very scenic drive through spectacular country. Mountains to the north, the Med to the south!