I had a wonderful stay in this apartment. It is just outside the Porta Nuova - very convenient for exploring the historical city center, and also for the connection to the airport and to Monreale, thanks to train/bus stops at Piazza Independenza. Also the best pastry shop of the city is just around the corner!
Apartment seemed recently renovated and everything was neat and clean.
If you decide to stay here for remote working, please note however that wifi is not very stable. Sergio helped to reset it few times (the router is not in the apartment), but still not always it allowed to connect. So better have some backup option (I used local SIM with 4G and that was working just fine).
Sergio was very friendly and helpful, communication was great. He gave many recommendations for places in Palermo and while there was a nuisance with the bedroom window, he came to check on it promptly and arranged to solve it same day. The check in was seamless, even though I arrive late. And I really appreciate that Sergio allowed me the flexible check out.