I had a great time staying at Carlos' apartment which is in a perfect location in Porto. Carlos and his wife greeted me at the door and were quick to start telling me all about their area of the city. Everything from the best port wine tour to where to get the best Francesinha(amazing local dish, don't tell your nutritionist). There even was a big bowl of cherries in the fridge!
I will be returning to Porto, and when I do I hope I can stay with them again.