We have stayed at Pietro’s apartment for almost 2 weeks and can only recommend it. Borsellino bus station is only 6-7 min walk from it - and it’s really big advantage, as you can busses throughout entire Catania from there.
Appartement itself is really cozy, there is everything the one might need for couple of days. There is also nice restaurant downstairs, serving really good food.
Also big thanks to Pietro, as he was always reachable and replied to all our questions almost immediately!