Our stay at Valerio's place was really enjoyable. The apartment is very well situated, close to lots of cafés and restaurants as well as many beautiful things in Ortigia. The apartment itself was spacious and quite modern, the bed very comfortable and the balcony lovely to feel the vibe of the island.
I would not describe the parking as "on street", free on street parking can be found but is not straightforward and the covered car park is 15€ a day. The wifi in the apartment was poor, there was no router just an extender unconnected to the router so WiFi was very patchy and although I reported this, it did not improve.
Ultimately, these things did not spoil our stay, which was very enjoyable, but it's good to be aware of them in advance.