Antonio's little apartment is very sweet and I had a lovely stay there. It is well located, just across the bridge from the old town of Ortigia (5 minutes walk). It is very nicely renovated, with a beautiful bathroom, kitchen with stovetop and everything you need in terms of cooking utensils. And the wifi was great - which is important to me as I am a 'digital nomad'!
The only thing I would say is from the pictures it looks like the flat is filled with sun - the sun doesn't really come in because it is on the first floor. But regardless the apartment stays warm all the time. Antonio was very accommodating and I really appreciated this. Highly recommended!