My family of 4 stayed at Ada's place for 3 nights in February. The apartment was perfect for a short stay. It was very modern, comfortable and spacious and beautifully decorated.
Ada was punctual when we met, showed us all the features of the apartment and gave us a delicious bottle of local wine and some good restaurant recommendations.
The position of the apartment in Otigia is ideal. Its basically right in the centre of the island and every attraction is just a short walk away. Loads of restaurants are right outside in the street.
Ada's place is perfect for your stay in Ortigia.