Our hosts made us feel very welcome and the venue itself was absolutely charming with an amazing view. Its worth noting that the venue is incredibly historic, but this isn't without its limitations.
Four of us stayed at the venue and it would have been much better suited for two. It is a tower in the truest since of the word, with a kitchen on the ground, extra sleeping space on the first floor and a master bedroom on the 2nd floor. The bathroom is located on the first floor and it is a single room with a sink, shower and toilet in the same room. This isn't necessarily a problem, but its worth knowing, especially for larger groups. As an aside, Wi-fi is also supplied by a public network around the town and we struggled getting signal in the flat due to the thickness of the walls.
Overall, for a romantic holiday for a couple, this air bnb is a good choice. The hosts are friendly, the view is amazing and this is central to the historic parts of Polignano. However, for a larger group or family, I'd make sure everyone is comfortable sharing some close quarters.