João's place is a very nice, luminous, well-equipped flat, with great views(balconies are pretty nice) and close to several supermarkets like ALDI and Lidl. The Check-in process was very self-managed, however, João attended very quickly to all my communications.
It is located in a quiet and residential neighborhood, so it is a perfect place to rest, but on the downside, is not that close to the center (around 40 min by bus) or to a metro station (nearest is 20 min by walking), and you might need to combine different transportation options to reach some of the most touristic places (I recommend Moovit app over Google Maps to plan this). If you are going out at night to the center, you will need to take a car to arrive there.