Joao was an AMAZING host, not only he came to welcome us in the train station and drove us home by his car but he also took time to explain every simple detail in the house and to tell us about the places that we must see in Porto, and one day we went home and found out that the light of the kitchen doesn't work, when I told Joao about it, he came in less than 5 minutes to fix it.
Also, the house is very well located, in the historic center of the city and so close to the most important monuments, all that with a wonderful view on the Douro River. Thanks to all that we had a wonderful stay in Porto.