The place is gorgeous. The location in a small courtyard looks beautiful and there's a park and some shops (for drinks, coffee or bread and cakes) near. The old town is about 20-25 minutes by foot.
Elisa was very kind and friendly, gave some usefull tipps and responded immideately to any message I sent (in english language). The place was clean and had some nice perks with it.
We stayed with three persons and were even offered an extra bed (there's one double bed).
I would absolutely recommend this apartment and host to everyone who isn't afraid to walk through Catania to experiance the town (you probably even could take a bus).