We didn't get to meet Rui as we arrived later than expected, but his wife and son were there to greet us upon our arrival. They were lovely and showed us around the apartment, gave us some tips around town and took us to the underground carpark.
The apartment was absolutely spotless and very large. Great if you've got 4 people staying. It was only 2 of us though and so we would probably have chosen something a little closer to the city-centre at the expense of the size of the apartment. The place was about a 45 minute walk from the centre.
The carpark was secure but quite dilapidated and pitch-black until you reach the light-switch in the centre of the large, shared space. Make sure you bring a torch!