I really recommend to stay at Alessandro's house. The flat was clean, comfortable, you can find everything there you need. Even they left some food and water, and it was very big help for us, as we arrived at night. Alessandro is very helpful, everything went easily. The beach is very close to the house, and it's not crowded. You can find small market nearby. There is a bus (538) that goes to Catania once an hour. I recommend this place if you want to stay near the beach and not too far from the city.