From Florence in October, husband and I want to rent car(Florence or La Spezia), keep it at the train Station while we spend 1 night in CT before getting car to head to a central village in Tuscany so we can visit other villages. Is this doable? Trying to figure out best way to see CT before heading to villages with car.
Why don't you take a direct train from Florence to La Spezia and rent the car there? It's easier to Avoid ZTLs driving out of urban areas. You would also save one day of rental and parking.
A better idea is to take the direct train coming from Firenze at 7.54 Frecciargenta from Firenze Campo di Marte station arriving at La Spezia Centrale at 09.37. To leave rent a car from the Avis/Budget office in La Spezia which is walking distance from La Spezia Centrale (but they are closed at lunch & Sat./Sun. - go figure). There are also Hertz and Europcar offices a short taxi ride away.