Mario's home is conveniently located in central Porto and furnished with all the necessities for a comfortable stay. The only drawback is that it is a shared apartment with many rooms and the host obviously cannot know the manners of the people who choose to stay there. I coincided with some very inconsiderate visitors who seemed completely oblivious of other guests and were making noise and having loud chats at all hours of the day, including 7am on Sunday. Beyond that, my stay was very nice and allowed me to enjoy Porto's wonderful sights and atmosphere.