Pluses: I stayed at Georghof hostel, nearby Georghof hotel, because there wasn't free rooms at hotel. It is old-fashioned, but cozy. Room was not big, but there were enough space for big luggage, putting and hanging other stuff or clothes. There wasn't sink in the room, but clean and warm dush and wc room was only few steps from the room. There were 2 clean towels and small shampoo. The U and S-bahn station Frankfurter Allee is only 5 minutes away, it is near big shopping center Ring.
You must pay 15 euros deposite for the key, but it is returned without problems during check-out. You must not leave the key at reception - very good. There is a lift, very convinient. Stuff is very kind and helpful.
Minuses: the photos of hostel, published online, in reality are taken in hotel. No internet acsess in hostel, despite it is written it is. Very noisy outside, because S-bahn line goes only few metres from hostel.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC