I will be traveling with my senior parents in May. After departing a Douro River Cruise in Porto, we plan to make our way to Salamanca for 2 days, onto Segovia for 2 days and finally to Madrid. They may be senior, but they are well traveled, in great shape and pack in a carry-on bag. Still, with 3 people, I am thinking a rent car might be easier and more economical (I have driven in Italy and all over the UK - not for the faint-hearted). Then again, the train might be easier and we could avoid searching for parking.
Thoughts? Any and all advice is appreciated!