My friends and I had a great stay at Sandro's place. The apartment is exactly as described and Sandro was as very friendly host. He welcomed us in person, cleaned up everything and offered us his help if we had any questions.
The apartment is quite big, offeres everything you need, has 3 keys (which is great in case you travel as a group and want to do different things) and you can reach the city center in 15-20 minutes by foot. A cab ride costs about 4 euros from casa da musica to the apartment, if you don't want to go all the way up by foot.

To sum up: This is a very honest description and Sandro was a great host, so we really recommend his aparment!