The Renato's apartment was a good choice. It's very beautiful, full of light and situated in a perfect place. We walked only by feet to all the attractions, shops, train station, and even to the other side of Duoro river (where you should definetely drink a couple of glasses of port wine). We got a taxi only once, to go to the ocean. And also I want to say some words about Renato. He told us everything a tourist should know about Porto, gave us some maps and a guidebook. Then he sent us an endless message about Porto's best reastaurants. He answered all the questions we had. And really helped us, when somebody stole my bag in Zara-shop with my mobile-phone, credit card and all the keys. He invited us to his home, helped to block the card and my Iphone by Internet. We are really greatful to Renato and his wife for that!