First and foremost: the photos are not accurate; the padlocks you can see locking the drawers under the bed are NOT included. They can be purchased separately for 5€: a bummer if you are only staying for one night. Same goes for towels, which again are not included.
This hostel is promoted as a "non party hostel", however reception closes early in the evening and nobody bothers monitoring what happens afterwards. During my night there, other people shouted and laughed loudly in the kitchen until 1am, making it hard for me to fall asleep as the walls are old and not soundproof. Moreover, my room was facing the street and since there are no curtains, it was basically never dark at night.
Rooms are mixed, or at least mine was; I had people coming in late at night, at around 2am and at 5am, meaning I got constantly woken up. Additionally, a guy came back completely wasted, he fell off the top bed early in the morning and pissed on the bedroom floor. Again - reception was still closed so nobody from the hostel team was around to help or check. Didn't feel safe during my night stay.
This lack of common sense is such a shame cause the building is beautiful, shared rooms are well kept and the overall atmosphere of the place is nice and homey.