Good and easy communication with Lurdes before the trip.
I did not meet her in person, but her husband who was really friendly and introduced me to a lot of interesting stuff in Porto.
The apartment is basic, but had everything I needed.
It lies in the backyard of an old building. If you are afraid of dogs that might cause some problems as you need to walk past two big and constantly barking dogs in order to reach the apartment.
It is near to the metro and Porto is a beautiful city, so I would recommend staying there.