Ivana's place is extremely clean and very central. There is just enough space for three people, it would better accommodate 2 adults and one child, as the extra bed is a bit short. Don't trust google maps on the exact location of this airbnb as the street is cut short on their map. As mentioned in previous comments, the only source of natural light is the door. It didn't bother us too much since we spent the day exploring and only came back in the evening when the sun was set. On our second day, the toilet started to leak every time we flushed. We informed the host who told us it was a new issue, hopefully it will be fixed for future guests.
Ivana seems like a nice person, however she doesn't speak English so our exchanges were brief and through an approximate translator.
Overall we had a very good stay in Catania and would recommend staying at Ivana's place.