My wife and I are planning to travel by train from Lisbon to Faro in April. From looking at videos it looks like some seats lie between windows. I'd like to have a nice view during the trip. Does anybody know if during seat selection there a way to know how seats are positioned with respect to the windows?

Have you checked with the Man in Seat 61? https://www.seat61.com/

No I havn't thankyou I'll check that site.

I don't know if it has an answer for you, but it is an outstanding resource!