We had a very nice stay at Concetta's. Ortigia is a beautiful place to stay at. Concetta was a thoughtful and welcoming host. She left many things for us to have breakfast, which was so pleasant! The kitchen was well equipped.
For New Year's Eve, we crossed the street to go to a very nice restaurant. Ortigia is quite well situated to discover Sicily.
I personally didn't like the apartment so much though, but it's only my taste. The "window by the sea" was narrow and barred even if the view was splendid indeed. What I like the least was the bathroom/toilets place. After a shower, and even though we did draw the curtains, the room was all damp. Not pleasant at all.
In short, if you are like us, just searching for a place to stay not to spend too much money, this is definetely the place to be! Good value for money.