We had a great time at Antonella's place. Her son Federico received us and was very kind in guiding us as we got lost driving to the citta alta. He also arranged a parking permit for us and gave a lot of good tips.
The flat is in great condition, as it looks in the pics, and very well located, close to main attractions in citta alta and cable car if needed.
Only other thing to mention is that the flat does not have AC/fans and it was very hot (+30C) when we went so it was difficult to get to sleep.