Marcella is a fantastic host, regardless of the fact we couldn't understand each other, Marcella showed us everything we needed to see/know through her patience and fantastic miming! She was flexible with our check in and waiting for us on the balcony when we arrived. A very lovely lady.
The flat itself is massive, beautiful high ceilings and an incredibly well equipped kitchen and a big dining room table. From the little balcony off the bedroom, you can see the sea from both sides. The main bedroom is off the road so is a little noisy, I would recommend packing ear plugs if noise bothers you.
In terms of location, you are in the middle of everything you want to see. A minute walk to the Ortigia bridge. There is parking outside the flat but you need to get there before 18.00 if you don't want to get stuck in the carnage of Sicilian parking.
I would definitely stay again if I am ever in Syracuse in the future.