This is a very nice private flat with helpful and communicative hosts living just upstairs and an excellent view of Etna.
As other reviews have noted it is a little distance out of the centre and on quite a busy road, but generally not too bad, I would second the recommendation of another user for the Moovit app, as Google maps doesn't seem to know about public transport in Catania.
If you are staying for a tourist visit the "Catania Pass" is worth investigating as a way of saving money on some visits and public transport, though is not completely straightforward so do look at all the details! Great little takeaway or delivery pizza place only a few streets away called pizzeria Sant Agata.