we felt really comfortable staying at the flat: clean, quiet (with windows closed in spring), great WLAN, desks to work at, a short walk away from Ortigia, new fridge with full size freezer, new stove top (full size old oven), combination air-conditioner/heater worked fine. We didn't like the sofa (you slide into a deep dent and it gave me a backache). Be careful of the step up to/down from the bathroom in the middle of the night.
the problems are not serious and we would not hesitate to rent here again or to recommend it.