We stayed two nights at Casa Mirabella. It looks exactly as showed on the photos and it's a good place to stay, right in the middle of Ortigia. Everything we needed was provided.
The only things that could be improved are the shower that hadn't so much water pressure and a dripping boiler.
Gabriele was late for our appointment, but when we called him he was in the hospital with a friend and he apologized. Was the first for him to be late for checking in new guests. Next to that you could tell Gabriele enjoys to host and put a lot of work in making a guide himself for Ortigia. Always nice to receive tips from the locals.
Summarized: we had a great time there!