We spent the whole month of September in this beautiful place and overall it was one of the best Airbnb experiences so far.
Our host Maria was very friendly and helpful: at checkout she picked us up at the train station, fed us lunch at a cafe, driven to the supermarket to get food supplies, and then to the apartment, chatting nicely all along. At our checkout, Maria even driven us to the Taormina-Giardini train station, which is 8 km away (not forgetting to stop for the coffee along the way).
As for the apartment itself, the main attraction is, definitely, the sea, the magical Ionian sea just a few meters from the terrace. It was so good there, that we didn't have much intention to explore other locations in Sicily (and there're plenty of attractions!), and stayed almost all the time in Letojanni. The car is kind of nice to have at that place (we've rented a car for a part of our stay), but mostly useful to get food from more far away and better supermarkets (Letojanni ones are small and tourist-oriented), but it's in no way necessary, you can perfectly survive and explore the surroundings without one. As for the exploration, I suggest to visit Catania and the small towns on mount Etna.
So, big thanks to Maria, Letojanni, the Sea, the Mountain, and Sicilia. Hopefully, we'll return here some day.