I would highly recommend this for your stay in Palermo. We spend a lot of time at AirBnBs and Gabriele was easily one of the best hosts I've ever had. He went out of his way to assist with any issues or questions that we may have had and was always quick to reply.
As for the listing itself, it is a very large apartment with a lot of natural lighting and with plenty of AC for hot days and nights. The kitchen was also well stocked for cooking. The wifi was strong and consistent. We spent about a month here and had everything we needed for a long stay. The street does have some noise at times, although that is just part of being in Palermo.
The apartment is located within walking distance of all attractions in the center of town, as well as near conveniences such as a supermarket around the corner from the apartment. I would highly recommend staying here.
Thanks Gabriele!