Joao is one of the best Airbnb hosts I've ever had the pleasure of dealing with. He went out of his way to pick our group up from the train station and gave us such a good introduction to the city. He was also kind enough to share with us his recommendations for restaurants and bars. On top of that his house is a lovely place with breathtaking views of the river and bridge. I would highly recommend this Airbnb listing to anyone visiting Porto.