This unit was very comfortable, we were 5 adults and we fit perfectly. Our stay didn't start out so great, the listing states a lift, which was perfect because we had many suitcases, but didn't mention an extra set of stairs to get to the actual unit. The location is a little intimidating at first, a few blocks away from the main road, but maybe a few too many (the locals said it was generally safe tho). It was also difficult to meet with Dario, despite the reviews here, but he was responsive on SMS, so i guess that was enough.
Overall our stay was very pleasant, the unit was great, spacious, and clean. It was better than any of the hotels we could've possibly stayed in. It's also very reasonable. I would stay here again if I find myself in Palermo, as well as recommend it to my friends!