All the previous reviews are spot on. XIRBA is stylish, comfortable and sqeaky-clean 2 bedroom apartment. It is exactly as described in the Air B&B description. The apartment building itself has been beautifully renovated.
XIRBA is in the heart of La Kalsa, a vibrant neighborhood in the heart of Palermo's historic center. It is within easy walking-distance of all major sites and abut a 10 minute walk from the Central train and inter-city bus station. Restaurants and cafes are nearby. There is also a Carrefour supermarket within 5 minutes walk.
Chiara is incredibly helpful in orienting us to the apartment and the neighborhood. She provided a lot of information about what to see and how to get there. She is always available by phone. Her English is impeccable.
Definitely recommend!