We had a very nice stay here. Check in was a bit stressful as we didn't have mobile data on our phones and we didn't receive the check in details until we had arrived at the apartment. In the end some very kind neighbours from the flat below helped us to get in. Would have been helpful to have the key code and wifi login the day before, or earlier on the day of check in. We never met Gabriella so it would have been useful to have had some basic info left in the flat.
For example, while it's a short walk to Aci Castello along the seafront, Aci Trezza is not accessible except by walking alongside a busy road (with no real pavement) which runs behind the apartment. This was pretty hairy at first but we soon got used to it. Swimming in the sea in front of the apartment is possible but it can be a bit hazardous getting in and out of the jagged volcanic rock pools as the waves crash in.
But we had a lovely stay - both Aci Castello and Aci Trezza have some nice bars/restaurants. The absolute highlight for us was the apartment's lovely view - it's so close to the sea, we loved just sitting on the big sunny patio just listening to the sound of the waves. Very good for the soul and highly recommended!