I spent a night in Alessandra's B&B and I would definitely recommend it. She's very welcoming and easy to communicate with. The B&B is very close from Ortigia and has stores and restaurants around. Also, if you come with a car, there's free parking in the area.
The B&B is exactly how it looks in the pictures and the breakfast is also good (Italian style). If I ever go back to Siracusa, I'd get in touch with her again!