The first of all - Antonio is an amassing host! Thank you! He was very helpful during our stay (we were for 9 nights). And his wife even cocked a welcoming lunch for us and left it in apartment.
Apartment by itself is very cozy, sharming, very well equipped and convenient. You will find anything you could need and even much more.
It is walking distance to historical part of city and major sightseeing points.
I would recommend Antonio's apartment to everyone, and definitely would rent it again if we were back to Catania.