It’s not worth the visit.
The guy who checked us in didn’t speak any English, only Italian, but was talking about a problem with a key and electricity, which the owner didn’t know anything of. It’s not possible to open the balcony so it’s dark all day and the place feels really empty - just to have a place to sleep at night. Also it’s super hot there as the AC doesn’t reach the upper floor with the bed.
Not satisfied, I’ve stayed many times in Bari and usually it’s a pleasant stay with really friendly approach, so as for me - not recommended.