Very clean hostel style BNB, very friendly service and very comfortable setup of rooms. I was very satisfied with the location as well. The location is perfect! Very close to the city center and very close to the train station which allows for easy access allover Naples and all the historic sites.
Although the area around the train station is not very safe, the train station itself is beautiful with many restaurants, clean restrooms (need coins) and supervised. The bus connections for Flixbus and fiumicino express are right near the station. Just be alert and careful at nighttime .
Make sure to call the host ahead of time to get directions, it can be a little tricky to find the right building/entrance in the piazza.