Great location, with everything on your doorstep (car park just a few minutes up the road if you are travelling by car; street food joints around the corner; all the beauties of Palermo a short walk away).
We did not get to meet Antonio, but were greeted by a lovely lady who gave us the keys and necessary information.
The AC was a real bonus - August is a warm month in Sicily!
It can be a little noisy, but nothing unbearable, particularly if you close the shutters and windows well.
The equipment was basic - but sufficient for a couple of days in town.
To note: the flat is on the third floor, and the steps are steep.
Overall - a great stay for us; we will definitely be returning to Palermo!