We really enjoyed staying in Alfredo's apartment. The location is perfect, because you can easily park close by and you are in Ortygia in 2 minutes walk.
The apartment is very spacious, has everything you may need even for a longer stay and the rooftop terasse is just perfect - you will not want to go to restaurant and rather make a cozy evening on the terasse with a splendid view.
We would recommend Alfredo's apartment for your visit of Siracusa.