We had a really nice stay in this Apartement.
It's located right next to the city center, it looks exacly like the pictures and there's everything you need for a short stay.
The only things that weren't perfect is that the shower seems a little improvised and the curtain fell down a few times and you can hear anything through the walls. Because there's a restaurant across from the balcony it can get quite noisy at times and you here everyone in the stairwell. If you're a really light sleeper, this may bother you.
Otherwise this place is really nice for a stay right in the City of Porto, Mike responds really fast and the check-in was easy and uncomplicated. We really enjoyed it!