The space was very comfortable, clean, and secure with all of the amenities for a short or long stay. The rooms were comfortable and would easily accommodate a family of 4-5. I specifically chose the space because it had secure parking, which was really great.
It is located in the city, with a grocery store around the corner. The apartment is east facing on the backside of the building with lots of windows. The sunrise over the castle was great to wake up to. The area was quiet at night. You will need to walk 10-15 minutes to get to the shops and attractions. Not a bad trade-off given the size of the apartment and the parking though.
There was a little confusion accessing the place (and the WiFi) when I arrived but once in there were no issues.
Overall, it was great value. I would recommend this place and would stay again if visiting Porto again.