Giuseppe's place is in the centre of Palermo, in very lively and safe area. He answered very quickly to all my questions and requests. We were 4 adults and 1 baby, we had both apartments, and it had more than enough space for all of us. He arranged a baby bed (extra 15€ per night) for us too.
We liked the terrace very much, and sat there for dinner and breakfast almost everyday in the beginning of November.
We never met Giuseppe himself, but he was checking several times if everything is ok and we need any help, and his father was always there when we needed, even when we had a problem with the shower (the switch was very hard to turn) his father came as promised and showed how it's supposed to work (although it was still very hard to turn...)
He also arranged a taxi for us to pick us up from the train station and to the airport, the driver was there always on time.
Both apartments are spacious with high ceiling and they were very clean. The kitchen was well equipped and we made our meals several times without a problem. It seems some parts of walls are thinner and the windows are single glazed, so even with shutters and wooden panels, we could hear some noises from the street, when some people or cars passed, but the street is in general quiet, and I guess we got a little sensitive ears, because of our baby.
All in all, we enjoyed our stay in Palermo at Giuseppe's apartment, and can recommend his place (especially the one with terrace!) to anyone!