We didn't meet the host Nuno, instead met a guy who checked us in, Mauro. He's a pleasant guy who gave us some tourist tips and also let us leave our baggage in the appartment after check out until our flight.
Regarding the appartment, it's placed 10-15 min walk to the city center and also 5-10 min to metro and bus stations. But this is a quite hilly place, so be ready to 'climb' a little :). The kitchen is well equiped and the rooms are light and clean.
The pictures correspond to the appartment but the living room and kitchen are smaller than they look on picture :)
The only donwside is that the street is quite noisy at the night and the windows are old and don't stop the sound.
Overall, the appartment is good and we had a great time staying there. I can recommend booking it.