I would highly recommend Rocco’s place. My husband and I stayed for two nights and were welcomed by his staff which are conveniently located in the building along with a bottle of wine. The apartment is centrally located and is within walking distance from the train. We also did a half day tour of Mt Etna and the tour host was able to find the apartment easily to pick us up. Great stay and we stay again if we visited Catania in the future!