Alessia's place is nice and it reflected what I saw in the listing. The location is great, next to a very beautiful pathway on the Etna mountain, and the area is very quiet and calm. Her place was also clean and we had everything we needed for our stay.
The main problem was that I wasn't able to lock the apartment, either when going out or when staying in. Alessia's apartment is on the ground floor; there is a wooden front door to enter and then, immediately after, a door with glasses, after which you are inside the apartment, in the living-plus-kitchen space.
The non-opening side of the wooden door was not secured to the ground but only to the wall, from the upper side. The door has a basic lock that is activated when the door is closed, i.e., you cannot open the door from the outside without a key if it is closed. The door also had a proper locking system, which was not working. The door with glasses might have been locked as an extra safety measure, but the keys for that door were never provided.
I didn't like the idea of staying in a place with that kind of locking system (or lack thereof), if not to feel comfortable when leaving my things in the flat and going out, but at least to feel safe myself when staying in.
As soon as I arrived and I realised that, I wrote a message to Alessia to explain the issue. She said that she'd send someone to look it up the next morning but nobody ever came.
The day after, I was taking a nap and I was woken up by people walking in the apartment: it was a couple who got to the wrong apartment and they were able to walk in just by giving a little push to the door, thinking that the keys were not working and that the door just needed a little help to open.
That was somewhat disappointing and made my overall stay much less enjoyable.