A very homely, cosy little modern one-room + bathroom apartment opening onto the gated courtyard of local families' residential area, near to the Castello piazza just 10 minutes walk from the cathedral and other central locations.
Antonella was very responsive in the run-up to me and my girlfriend's stay, and was prompt but friendly and informative upon our meeting for check-in.
The bedroom/living space is small but very well equipped, considering, with all the equipment needed for an Italian home breakfast - Antonella seems to have thought of almost everything! The bathroom was very nice and clean, with a spacious shower, hairdryer, and most other gadgets.
The only real issue we had with the apartment during our stay was that the shower tended to leak/overflow after just brief periods of use, which required the use of multiple bath mats and towels to control (fortunately, we found that Antonella had left an abundance of these for our use).
This, combined with the lack of any opening windows other than the door (which we didn't really feel comfortable leaving open for long, since it opened immediately onto the slightly grubby above-mentioned communal space), meant that the whole flat ended up smelling a little damp (not in a dirty, unpleasant way, but just wet) for the remainder of our stay after the shower's first use - we found that nothing really dried out, no matter how long we left it...
I would also say that the price of the place for two (which went up quite a lot compared to the price for one) was quite steep for its size compared with other places in Catania (it's not an expensive city within Sicily).
Having said all this, the location was perfect for us; very convenient walking distance from all the central sites, but just far out enough so as not to feel right in the thick of it for either Catania daytime or night life.
For couples or solo travellers looking for a modest, comfortable little space to retreat to after a day's wandering around this colourful but slightly neglected Sicilian city, Antonella's flat would serve you well.
(P.S. You must try the Sicilian holiday breakfast of granita (pistacchio, mandorla, caffe or a combination best in my opinion, but limone or gelso - mulberry - also classic) with a Sicilian brioche during your stay on the east coast. The ones we had at Caffe Prestipino right on the corner of the cathedral square were some of the best I had in Sicily - way better than in Catania/on the west coast!)