Where to start... I got clothes and my towel stolen from my room, which was everything that was not locked in the basement (side note: there are no free lockers). The employee was not really helpful, he only said he was sorry. The bathrooms at midnight were a mess: two clogged toilets, one broken and leaking urinal, and a sink with blood and bloody paper towels. There were also some minor issues with the kitchen and the noise, but that's unimportant. I'm afraid I cannot recommend this hostel.
Good: the staff was incredibly helpful, facilities are great, location is very good (near the central train/bus station, two blocks away from a subway) and there's even an ATM across the street. Entrance doors require security codes. Not as good: despite the security, my shoes were taken from my room. Now, I can't think of anything the staff could have done to prevent this, and they did their best to help me out, but I still think I need to point it out: travelers, remember to lock your stuff.
I found the hostel incredibly clean and comfortable, and the staff was very nice and helpful. The only thing I found slightly unusual was the breakfast schedule, as not buying it from the hostel means essentially no breakfast, given that the kitchen is taken until 12. Still, the breakfast is fairly cheap and the conditions are very clearly laid out, so it's not really a problem, just unusual. I'll definitely recommend the hostel to my friends.
I had a great time in the hostel - the staff was nice, the free breakfast was a great plus, the location across the Market is great and the announcements of shows during the week was super useful. The individual curtains in each bed are also a fantastic idea - I wish more hostels did that. I'm 100% satisfied and I'd definitely go back.
For me, the hostel surpassed all my expectations. I think some other tenants may complain about stuff that may not be clear enough, though. During my stay there was a problem with a missing computer, and even though the staff explained us how to handle valuables, perhaps it should be even more explicit. I also read complaints about "only cold water in showers", while in my experience the water just takes a bit to heat up. Explaining this beforehand may help future reviews, as I had a great time.
The staff was extremely friendly and helpful. The rooms were clean and the kitchen was completely equiped. I'll definitely go back there next time I'm in Copenhagen.