Trecastagni is a lovely place and the house is amazing! We stayed for three nights and we would have stayed longer had we known this. From Maria's place we made a day trips to the Etna and Taormina, which were in easy reach and it was lovely coming home to this peaceful little gem. For us it was also a plus that there were few if any other tourists around - we didn't get any English and we had great fun trying to communicate with the butcher at the grocery store around the corner.
Maria wasn't there when we were at her place, but her friend Mariella was, and she was very welcoming and gave us some great tips - our stay couldn't have been much improved!