Dorotea's flat was even better than the pictures! It is in a beautiful old building with exposed stone - though it has clearly been recently updated as all furnishings and amenities were modern and perfect (including the air conditioning unit which saved us in the summer heat). The location is also ideal - on a quiet enough part of the street to not have any noise in the evenings but a mere five minutes walk (max) from the famous beach of Polignano, the old town and an abundance of great restaurants.
The apartment is also only ten minutes walk from the train station so any trips we made to other towns were so easy. We stayed in Dorotea's apartment for a week and used Polignano as a base for exploring more of Puglia and would highly recommend others to do the same!