Our stay at Robertas place was lovely. We didn't get the chance to meet Roberta personally but her friend was super helpful with getting us checked in and the communication leading up to that was great on Robertas end. She even helped us with booking a car service from Catania airport.
The apartment was in a nice location, easy to walk anywhere in Ortigia, although it is a small island so I think anywhere is in walkable distance :)
The apartment was a bit on the smaller side but served the simple need of a 2 night stay in Sicily. The big plus is that there is a private balcony that was perfect to eat breakfast or have a drink in the evening.