Our stay at Helga's place was nice and comfortable. The loft is really nice, clean and has everything you need. The view from the terrace is really special but I guess without a car it is hard to reach Helga's place on a daily basis. With a car, it is also no problem at all to reach the supermarket nearby and cities like Taormina and Syrakus. As we haven't visited Catania itself, I can't say how well you can reach Catania city centre from Helga's place but it did seem close.
Helga and her husband were really nice and communication was no problem, we would definitely recommend Helga's place and come back anytime if we come back to Catania one day!