The gorgeous view of the apartment made our Porto trip extra special. It's in a historic part of the town, and quite central to access the restaurants on either side of the river - or the other central parts of the town. You can pretty much reach any important part of the town within 15 mins of walking... I should mention that access to the building can be a little challenging for guests with limited mobility (or heavy luggages) due to the stairs involved, but Joao offers some hints and his help to avoid any problems.
Joao and his wife were great hosts, both in terms of communication and responsiveness and in terms of giving us info and hints about the city and our surroundings.