Very nice place with a great location in Bari - we were two families with small children visiting for a week and would definitely recommend it for convenient sightseeing and closeness to the city center.
About the location: Good neighborhood, well lit in the evening, lots of small shops/restaurants nearby. We took the bus no.16 from the airport to the Bari Centrale railway station and from there there is a bus no.2 that stops very close to the apartment, so getting to it was easy. We took a taxi for the flight back, as it was too early in the morning and no public transport was available - there was a phone number conveniently provided by the host and the taxi dispatcher spoke good English, so we were able to arrange the transfer of 6 people with luggage for a flat fee of 25 euro.
About the place: It is renovated and all appliances and linens/towels were looking fresh. The host was flexible and very communicative - he let us leave our luggage before the check-in time (16h), as our flight arrived early in the morning. The cleaning was later than the check-in time (we opened to the cleaning ladies), but as the place was fully booked and the day was with heavy rain and bad weather, this was understandable - we went out for dinner and all was clean when we returned. There was no coffee/tea available, as described on the site, but we got our own and have no issue with this - all other kitchen condiments and bathroom supplies were available, as described.
Overall: This is a nice, affordable place to get when visiting Bari and we definitely would recommend it.