This hostel is small and packed. The only thing that is good is the location. S-bahn station Konigstrasse just across the road and 10 minutes to the center. However, it also means that the train running underground will shake your room (not quite disturbing for me).
Talking about the hostel itself, I have see worse in terms of hostel. Just don't expect the good quality. The hostel itself is pretty worn out, but still fine. The shower is quite ok. The service is not something that I can praise. Their check in hour start from 1pm, but I have been waited for 1.5 hrs for the host. (probably because they have a party the night before). But I guess it should be fine as the staff are friendly afterwards.
BTW their WIFI is the best hostel wifi I have ever seen
*Expect to pay 3 Euros a day per person for the beddings