I had a great stay in Catania thanks to the Salvatore's place! The location is close to the city center and all the main attractions. It is also just a few bus stops away from the airport. The apartment itself is nice and clean, well equiped for a long term stay (you might need to buy your own laundry detergent and dishwashing liquid though).
There's a nice bar right outside with the absolutely kindest owners, who were my go-to for local advice.
Highly recommend for long-term stays.