Rosanna is such a nice personn.
Our train had 3h of delay and she waited for us (even it was the evening). She explained us everything and was available, before and during our stay.
The flat is very nice, clean, modern, well equiped, exactly like on the pictures.
About improvement: beds (which are really bad) and settle a wifi line thus the flat would be perfect.
Concerning the location, for people like us who like to walk, you have to count 30/40 min to be in the city center and 30/40min to go to the beach.
In the area you have supermarket and restaurant but most of them was closed when we were in Bari.
In a nutshell, I really recommend the Flat of Rosanna.
Thanks