Horrible! To begin with, this is a hostel, not a hotel.
Secondly, the receptionist treated us badly because we arrived 50 minutes later after we had told him (still that was before 22pm!). As he was in a bad mood, he made up the hostel rules just to annoy us. He threatened us with the €200 fine if we smoked, and at the same time he didn't accept a late check-out even though I was willing to pay the extra €10 per hour which were established by the hostel!
FInally, the room is much smaller and darker in reality than in the pictures. And the balcony can't be used to smoke (what sense does that make?).
So we just took our stuff and left right after we arrived. My recommendation is you should only go to this place if the room costs €5.