Our stay at Nuno's apartment was great. The place is nice and cozy, and looks exactly like in the pictures (no hidden or "photoshoped"). It was very clean and all electronic devices worked just fine. There were no problems with the hot water. The furniture was comfortable and there was enough room to store our luggage.
Although Alfama is full of restaurants, some of which host Fado concerts inside, the area where the apartment is located is very quiet. We didn't have any problems with noise.
The restaurants arund it have good food and a nice atmosphere, and Nuno helped with recommending some of the best for dinner.
He was an excellent host. He met us close to the train station where he had guided us to get to, he showed us around the neighborhood, he gave us a tourist map to help us through the city and he explained how to get to the main attractions. And he also greeted us with sweets and juice.
He was very responsive every time we needed to contact him.
Overall, a very nice experience which we definitely recommend!