I spent a few nights in Porto with two friends and we stayed at Maria's place. As described their house is a bit outside the city centre and close to the City Park. Maria and her husband were the perfect hosts! They were always willing to answer our questions of how to get around the city and gave us some great tips for restaurants etc. They even took care of our laundry, all in all it was a great experience to stay at their place and I would totally recommend it. There were also other AirBnB guests staying at the house and we shared the bathroom with them, which worked very well.