The apartment description and photos are quite accurate. It is a nice and clean two rooms apartment on a second floor.
There are two supermarkets, nice pasticceria and nice panetteria, all in 5 minutes from the apartment. There is also a good caffetteria just behind the building, which opens very earliy.
The city center is in 10-15 minutes of walking. The beach is in 20-25 minutes of walking. The times should be corrected by the fact that we were travelling with a 2 yo child in a pram.
Valeria was very nice, helpful and promptly addressed our requests. She organized us a pickup at the Palermo airport and gave a free ride to the Train station when we were leaving.
Some people complain about the noise. Well, I think that it is impossible to find better place anyway - roads are everywhere. The noise was not significant though, our son had no problems sleeping in the morning and in the afternoon.
Grazie mille, Valeria.