We had a lovely stay in Bari, Ilaria's place is great. It's residential but only a 10 min. walk away from the centro storico. The apartment was very clean, had a very comfortable bed and a coffee machine. :)
Communications with Ilaria was also very good and uncomplicated. Just make sure to get the correct street number. If you use Googlemaps via Airbnb it gives you the wrong number.

We would definitely recommend her place and also come back.