We had a great 4 days in Aci Castello at Andrea's place, which is well located in a quiet complex across the road from the ocean and on a main road serving several pretty coastal towns. You need a car to get there and to get around, although there is a bus stop that goes to Catania out the front that takes about an hour and runs every hour-ish.
The apartment is small but good for a short stay for one or two people, with a lovely little courtyard outside. Free parking inside the complex is super handy too. The apartment has everything you need and the facilities are good and very clean. Andrea even dropped over a delicious present halfway through our stay, and sent us advice on what to eat in the area. Thanks again Andrea!