We had a good time staying at Rui's place. The location of the apartment was really good, and really easy to reach from the airport by metro, as well as the city centre. Because Rui was on vacation, we were able to check-in ourselves, but that was really easy as well. Also the communication with Rui was quick and easy. And the beds where comfy.
Unfortunately the house itself wasn't really clean when we arrived. Rui contacted the cleaning lady, who came by the next day. But still it wasn't cleaned very well (lots of dust on the ground, and hair in the bed). Also the house is a bit dark (as you can tell by the pics), but we didn't spend a lot of time in the house, so that wasn't a problem for us.
So if you need a place to crash close to the town, this is a good place to stay. If you are with more than 2/3 people and want to use the house for for than just sleeping, than I would recommend to search for a bigger place.