Looking at a boat from Porto to Regua, a short stay, and a return to Porto by train. Any suggestions? Thanks!
Not to be trite, but, suggestions for what?
There is a single train line that goes from Porto to Pocinho, you can find the schedule
online. There are some nice hotels in Regua and also at least one in Pinhao. If you
are interested in visiting the quintas for wine tasting, you may find more of those in
Pinhao.
I would look at the boat options (can't help with those) to see what works for you, and
then find the trains that get you back on the schedule you want.
There are several companies that offer upstream boat cruises with downstream travel by either bus or train.
Not making any recommendations but posting these so you can check them