We've spent 3 weeks in Siracusa, combining work from home and a few days of vacation. Sebastiano's place was excellent for both purposes.
The apartment itself has everything needed, including 2 ACs, fully-equipped kitchen, a big TV with Netflix, a balcony, and a terrace. There are quite a lot of cafes, bars and restaurants within a walking distance from the apartment. So, the place made our "work from home" very pleasant.
As for the vacation time, the apartment proved to be perfect yet again. Not only it is close to various Siracusa sights (including archeological park and Ortigia island), but there is also a bus stop and a train station, from where you can go either to a seaside or to another city. The closest beach is just ~20 min bus ride, and the stop is right in front of the apartment.
Moreover, Sebastiano and Maurizio are amazing hosts. They were very friendly and always available for any questions and help, and gave us plenty of local tips.
I would highly recommend this apartment to anyone, and will gladly stay there again myself!