I heartily recommend Marco's apartment in Siracusa. Everything was perfect! I only wish we had booked this Airbnb for our entire week in eastern Sicily! Marco's apartment is in Siracusa, but just 10' walk from Ortigia, making it an ideal location in my opinion it's not directly in the most touristy area, but easy to walk everywhere, with free street parking, safe location near restaurants and delicious bars for breakfast.
It's spacious, clean, bright, airy, and most importantly quiet (e.g., on Sunday evening, the bar down the road was playing loud music but with the windows closed we couldn't hear a thing.) Kitchen and bathroom have all the amenities you need, if something is missing, Marco is happy to help you as he is always super responsive on messages.
We were grateful to be able to leave our luggage in the building when we arrived in Siracusa in the morning before check-in time. Marco also allowed us to check in a bit early & check out late. Thank you Marco!