I stayed at Luis and Madalena's place for a month. It was a very pleasant experience. I felt at home. the location is exactly what I needed. 5 min away from the gym and chain supermarket. lots of local shops, restaurants, coffee shops, and entertainments around. walking distance (if you are a fan of walking) to almost everywhere.
This young couple is very nice and helpful people. they made my stay a memorable time. I will be back in Porto and I do my best to get to this place again.