The apartment was perfect location and really central. All the tourist attractions were walkable and didn't have to get the metro once. The place was really clean and the size was perfect for 2-3 people. Emanuela was lovely and gave us so much info about restaurants, how to get to the apartment and what to do in Porto.
The windows were quiet noisy as there is a square right behind the apartment. The only reason why I rated a 4.
Highly recommended :)