Communication with Francesco was alright and we arranged when to meet after a small misunderstanding in the beginning. The apartment itself is beautiful and has an amazing view. The air conditioner/heater works perfectly, the bed was comfortable and everything was clean and fresh. We even got a bottle of wine for free. The location is great for exploring Palermo and there are lots of food options within walking distance. If you arrive by car, be prepared for a bit of an odyssey when it comes to searching for parking spots, especially in the late afternoon. Unfortunately, the stove didn't work and the fuse blew when we used the hair dryer in the morning but as Francesco had wisely shown us where to fix it upon arrival it was all okay.
If you are looking for a central, cool place to stay in Palermo, this can be it. We had a nice short stay here. Thanks!