We did not meet Stefania in person, but she was fully available by phone and in text as well being very helpful and guiding in all matters.
The cleaning lady let us in the apartment, which is in the heart of Palermo's center. Though the walls are thin, we did not experience any loud noises, neither from the neighbors nor from the street. The apartment is cosy, with all the needed accessories, though the shower, the tap and the tables were not that clean. There was in the kitchen and bedroom a bit of stinky smell.
Who would come by car might face some stress as in Palermo the traffic and the parking is hectic, I can advise the parking app Parkopedia. There are locals in each parking lot who are advising and also guarding free parking slots for some tips - usually 5 Euros. Better to give that money to avoid any bad surprises next morning - as we had.
Overall I can recommend the flat more for youngsters who are ready to deep dive into Palermo's culture and daily life, which is outstandingly rich and vibrant.