Alberto's flat is beautiful, and in a very central part of town. It was quite hot the week were in Palermo, but the flat has an AC unit, so it was very comfortable in the flat. There is a gorgeous and huge terrace attached to the flat (only accessible through the bathroom), and there are nice views to the plaza through the other, smaller balcony. The plaza has parties that begin at midnight and gets extremely loud, so sleeping (without the sound of the AC) can be quite hard when that happens. The flat is also up 3 flights of stairs, but it wasn't a problem for me and my older parents, so unless you have limited mobility, it's very easy to get up :)
Above all else, Alberto and Sebastian are truly the most helpful and attentive hosts I've ever had. Whenever we had an issue, they were immediately available to help and do whatever they could to make our stay as great as possible. From local recommendations to connecting us to great taxi drivers to take us around, Alberto and Sebastian really made our trip and it would not have been the same without them. I would definitely recommend this flat to anyone visiting Palermo, especially if you need help planning your trip and making the most out of a short amount of time in Sicily.