Our accommodation in Porto is near the São Bento metro station. Our plan is to rent a car after four nights in Porto and drive to Douro valley for two days. After the Douro valley we are heading to Coimbra. Two of my car rental options are below:
Pick up car from Hertz on Rua de Santa Catarina, about a 20 minute walk or short taxi ride from our apartment. Drop off on Rue Padre Estevao Cabral in Coimbra.
Pick up and return car to Sixt in Maia (near airport), about a 55 minute metro journey from our apartment. Then take a train to Coimbra.
I think Hertz is the better option and the additional rental cost is offset by eliminating train ride from Porto to Coimbra. Via Michelin indicates the driving cost to be 22.64€ including tolls and fuel. Does this make sense or is there a better option?