I stayed with my partner at Deborah's house for a month. Deborah is an amazing host and a very kind and generous person, we really got along very well, and that made the trip much more memorable for us.
Regarding the accommodation, Deborah's house is amazingly well furnished, and very beautiful. You can use the common spaces (kitchen, living room) like it was your own, although of course Deborah and her family are using it too; it is a shared space.
We worked from home for most of our stay. There is wifi in the bedroom, but the signal is better (for video calls for example) in the living room.
In the summer, the house stays fairly cool most days, and the ceiling fans will keep you fresh if needed.
If you want to discover Catania and its surroundings, and have true local experience, I could not recommend staying at Deborah's enough. We will definitely stay in touch with her and hopefully see her and her family again on our next stay in Sicily :-)