We stayed in Maria's apartment for three nights at the end of June 2017, and these were in the middle of a scirocco heat wave! Fortunately, the bedroom air conditioner is cool and quiet, and we slept very well. The place is exactly as described, and it is very clean and well set up for guests. The extra pillows were nice! The apartment is in a neighborhood that seems a bit rough at first glance, but it turns out that it is safe and full of friendly and busy people. Be careful with the unbelievably busy street in front, though; there are some nearby crosswalks that are respected by all drivers.
The location of the place made it perfect for our walking-only visit to Palermo. It is just one minute to the Porta Nuovo gate, and the city center begins there. We caught a city bus up to Monreale for a good visit to the extraordinary Cattedrale.
Maria and her husband were very easy to communicate with, and very generous with their time to make sure that we had a good stay. She helped us arrange for a car parking spot exactly across the street in a safe area, so that we could tour by walking. If you know about the parking situation in Palermo, you will understand how valuable this is! It is a bargain at 5€/day.