We had a wonderful stay in Porto! Rui let us store or luggage since we arrived early and took the time to show us thoroughly around the place once we checked in. He also sent local recommendations and a few options (cheaper than those we found in town) to get to the airport since the taxis were on strike during our stay.
The apartment is an easy walk from the town and the water but felt quieter and away from the crowds. It is equipped with everything you could need to cook if you wanted and the balcony was a nice bonus.
We have no hesitation recommending this place for a great stay in a beautiful city!