What a wonderful place!
It was so lovely to meet Mario and Melina, Alfio's parents. Mario took us out to the sea which was just wonderful :) We loved the apartment, everything was perfect, it is very modern and very clean and functional. The terrace is great and you have a view of the Faraglioni rocks. The flat is peaceful and quiet at night, we slept very well, while it is only a few minutes walk from the sea, the main road by the shore, and the piazza and the restaurants - a perfect spot. There is no lift, which was no problem for us, but in case you have problems with your knees or climbing stairs, this is good to know. Climbing the stairs also means you have a wonderful view over the sea :D
I warmly recommend Alfio's apartment for everyone who wants to experience the warmth of a Sicilian family and the welcoming and peaceful atmosphere of the Sicilian fishing village, Aci Trezza, where the people are so heartfelt and kind you never want to leave. The local people were all very helpful and easy to communicate with (we had a language barrier, but everyone tries to understand and if you speak even a few words of Italian and have an open mind, you'll be fine).
The food is gorgeous in the local restaurants, particularly the fish. Arancino is a typical Sicilian dish, a deep-fried "rice ball" filled with mozzarella and other fillings, so it comes in many flavours (ragu/mince meat, melanzane/aubergine, and of course pistacchio, and in Aci Trezza, also fish).
All in all, we had a lovely stay in Aci Trezza - which is only 20 minutes from Catania, well worth a visit - and loved staying in Alfio's palce. We want to go back already!
Grazie mille per tutti!