Circus Hostel - and other hostels in Berlin

Does anyone have any experience of staying at the Circus Hostel in Berlin for any length of time? Their website (www.circus-berlin.de) is a bit unstable at the moment so I'm not able to find out more, but it seems to get good reviews elsewhere on the net.

I stayed at both the new and old Circus hostels and they are good. Another one I recommend is http://www.baxpax.de/de/home/

I stayed in the Rosa-Lux Circus a couple of years ago and thought it was good value. Not sure how much has changed since then, but it was relatively clean, and the staff helped me out a bunch.

Sorry, but haven't got many more hostel nights to compare it to in town.

www.hostelz.com ?

I've stayed several times at the Meininger Hostel in Meininger Strasse (they have two other locations in Berlin) and I find it to be a very good place. It's very clean, the staff is very friendly, breakfast is included in the rooms' price and it's a very big buffet breakfast. I've stayed in some other places where they give you tea/coffee and crackers for breakfast.
The place is accessible directly from Zoo station with the bus, which also is convenient.