Hi. The stay at Luis' apartment was splendid. It is nicely located, so that you can reach the Douro, old city center, etc in 20 minutes time. By walking through sweet little streets. Near to airport with the metro (purple line) makes a comfortable commute.
As for the apartment. Great! The interior design is brilliant and put together with much love. Also communication with Luis was awesome and he gave nice tipps for where to go and what to eat and and and. We enjoyed the stay.