Nice flat in the old center of Catania. Bedroom has the beautifil ceiling (which, as I understood, is about 150 years old!). Staying was wonderful. Everything is close: shops, cafes, mini-markets. Train station is in ~15-20min. Central square is in 5-7 minutes. Wi-fi speed was 7Mbps/4Mbps. The only downside was it was hard to set a comfort temperature in the shower because of the gas boiler.
Jhonny was nice, friendly and communicative. He was very flexible for me on check-in/check-out and also gave some advices on what to see and where to go in Catania.