My two teenagers and I stayed for four nights in early July. The apartment is a very short walk to the main square of Aci Trezza, with many restaurants. The apartment has been recently renovated and has two loft beds which are comfortable. The kitchen is well set up for cooking everything from breakfast to a full dinner.
The caretaker of the apartment is very friendly and helpful. My daughter forgot a necklace which was sentimental to her, though not expensive. The caretaker very nicely retrieved it and mailed it back to us at no cost.
The only note I would make is that the apartment is truly in the middle of things, so you hear and meet your neighbors regularly. We found this to be charming, but if you are looking for a place that is remote, you should check out some other options
Overall, we were very pleased.