My wife and I stayed here over Christmas and had a wonderful time! The apartment is beautiful, spacious, clean, and has a nice kitchen. The internet is blazing fast if you are coming from DSL. We cooked almost every day and our experience with that was great. The tap water is nice and fresh, and the water pressure is quite strong! The air conditioner was effective at keeping the place warm too. The mattress is firm, which we really liked! To those that are unaware, getting into the apartment involves climbing up a few tall flights of stairs. As an American I was surprised at the height between each floor and a bit spooked by the open central stairwell, but after spending some time there it was like climbing any other staircase.
The location is nice, but we found that we had to walk a good distance (~15 min) to get to the water front or the old town. If you are eating out every day it is a good way to work off the calories! There are plenty of good restaurants and stores close to the Airbnb that will let you see a less touristy side of Bari. In fact there is a focacciaria neighboring the building which we patronized frequently! If you arrive from the airport, it is closer to the stop right before Bari Centrale.
We highly recommend this Airbnb to have an authentic Bari experience.