I stayed In Gvay's B&B for only one night. Gavy was very nice and polite . We arrived at 10pm and he was there waiting for us.
The accommodation is very cosy and characteristic and I have found it amazing.
It is very central as well and everything is walking distance so you won't need a car to explore the beautiful old town of Bari and restaurants, pubs and locals are just around the corner. I do recommend this B&B