Nélia took us on a last minute reservation and was accommodating. We we not greeted by her but by someone else as she was at work which was fine. Her place is just on the south end of the Douro river. You can either drive to the central of Porto or take a little walk down to the river and take a water taxi. I also notice that Uber operates in Porto. Porto is a great spot and we wish we had more time in the city