Claudio was a very helpful host, before and during our visit. He even arranged a taxi to the airport for us when we thought there was going to be a transport strike.
The location of the apartment is great for visiting Catania itself and not too far from the major bus and train stations. The rooftop terrace is a big plus, being sunny all day but with a large parasol if you need shade.
Do take note of the clear warning on Airbnb about the stairs. These are not suitable for anyone who is disabled or unfit but, if you are able, it is worth the climb!