We stayed 5 days in Bari in Ferbruary 2019. The apartment is very huge, confy, the only tiny room is the bathroom, it could eventually be a concern for very tall persons. The apartment is very well located. 6 minutes to the train station, then you can easily take a train to visit Monopoli , Polignano, Lecce, Barletta.
The beautiful old tow with Basilic San Nicola is about 10 minutes walk. The seaside as well. You don't need a car. The neighborhood is ok, safe and quiet by night, there a lot of shops, good restaurants. The host was very helpful and reactive. All in all, we highly recommand this apartment