Me and my girlfriend had a great time here at Alessandro's place.
It was clean and we had everything we needed: a good bed to sleep, great kitchen, nice bathroom.
Location wise this is equally situated between Bari centrale train station and the beach, relatively close to everything(15 min walk, 21 for the old town).
One bathroom for 6 people sounds like it's not going to be enough, but in the end it was not a problem. Just be patient and understanding.
Definitely will book again if we travel to Bari.
Thank you, Alessandro! :D