This is a little cute space close to the centre of Polignano (even when the town itself is not that big) and if you have reservations for the Grotta Palazzese, the restaurant is a short 5 minute walk. Parking could be challenging (as in any town in Italy) but there are no ZTL signs around and we were able to find a spot right in front of the room. Cinzia was easy to communicate with (extra points for speaking Spanish) and even let us check in a little bit earlier.
Overall, I would highly recommend renting this place!