Everything was great, Antonella is really nice, she left us planty of the food for breakfasts. We arrived at 22.00 and for her it wasn't a problem at all. She also offered us some pasta.
The location it's great, because you can walk to both parts of the city, but also buses are a good option (there are stations very near the place). We Just didn't enjoy so much Catania as the city, because we come from a very clean city and country (if we compare it to Catania). We also thought that there will be some nice beaches, but we didn't find one.
To conclude - everything about the Antonella's place and her was perfect, we just wouldn't reccomend that you stay only in Catania for more than 4 days. If you have a car you can easily visit some other places and live there for more days, because inside it's everything you need.