Rui is an excellent host. He was awaiting us for the check in, advised on things to see and where to eat and was flexible with respect to the check out time, which helped us a lot since we had a late flight.
The apartment is spacious and very clean. It also has all the appliances you need. It is 20 min walk to downtown city centre, but it is also near a metro stop, which can take you either downtown or to the airport.