It is hard to find better location in Catania - everything is just one step (okay, in some cases 10-15 minutes :)) away. There are small grocery shops on the same street, a couple of supermarkets just in a block's distance; a terrific trattoria in the same building, a wine bar just on the corner, not to mention dozens of other pizzerias, bars, cafes and restaurants that can be reached by foot in just 5-10 minutes. A bus stop to/from airport is two minutes away; bus station to go to the beach - 7 minutes by foot.
The apartment itself is everything that is advertised - we were staying there as two adults and a child and had a very comfortable stay. Wi-fi was going down from time to time, but we found that to be a common case in Catania and took the chance to spend as less time as possible offline :)
Gianluca and his wife Silvia were very helpful at the planning stage, as well as explained everything onsite. We didn't have any problems to check in with them during our stay, but they were readily available to help should the need arise.
In a word, the place and the hosts are definitely recommended.