This was a very convenient location, but there is construction right outside. The city is going through massive construction as of May 2022, so I was woken up every day by loud drilling. Other than the construction, this is a very convenient location.
The other negatives about this place is that there is no sound barrier between the public hallway/staircase and the first floor of this apartment, and there is no elevator. You can hear everyone while you are in the living room and kitchen, and they can hear you. Be prepared to climb several flights of stairs!
Outside of that, the place has 2 convenient bathrooms. and the beds were comfortable. This was a relaxing place to stay in the heart of Porto.