The apartment is on the 4th floor with a nice view on the city, good location, everything is in walking distance, even markets and shops 2-3mins walk, city center with cafes, restaurants and important architectural sights within 10mins, main train and bus station is 30-40 mins walk tops. The apartment itself was nice and clean and has a huge balcony, really nice and unique experience, having breakfast there in the morning was the best way to start the day. The shower is a bit small, that wasn't a problem for us, but it could be a useful information for travelers in the future.
Massimo was kind enough to provide us a detailed map where to go in Palermo. We could always text him on whatsup, and he also offered to give us a ride from and to the airport, on a better price than any of the local taxi companies.
There's an extra charge on using the air conditioner, that information had been provided after we finished our booking, but I let the host know before we arrived, that we won't use the A/C, so we didn't pay any additional cost.
Overall, the apartment is really charming and cozy, we stayed for a week and it felt like a second home, it was a bit difficult to leave this unique feeling behind. Grazie mille, Massimo! :)