My friend and I spent 3 nights at Gwendalina's place. The apartment is located in an old building, insanely close to most things a person would want to see in Catania. Highlights were the rooftop terrace and the famous fishmarket (it's almost literally just around the corner). The flat is perfect for those who want to spend a relatively short time getting to know the city - as it is rather small. I can't mention a single thing that we would have missed during our stay. Although we didn't meet Gwendalina (we met her assistant) - they were both very kind and gave us tips for things to see/places to eat/guidance on how to get to the airport. Overall we were very happy with the stay, we would recommend staying here to anyone and would also stay here again.