Positives: Very central. Good location and view from balcony. Aircon is a plus. Staff were very friendly and helpful. Quiet and away from street noise. Negatives: Lots of cockroaches. Bed was broken and very uncomfortable. Piles of garbage and stray cats at the front door (kinda normal in Egypt but they could at least take it downstairs away from the hostel to avoid attracting pests). Owner smokes a lot in the lobby area and can smell it in the rooms.
Positives: Very clean room and decent ensuite bathroom. Staff at the desk were really friendly and helpful with excellent English. Location is very central and handy. Aircon is good. Negatives: Extremely noisy. It's at street level with thin windows. If you're a light sleeper then forget about sleeping here. The owners of the hotel spend a lot of time sitting in the lobby right outside the rooms smoking. You can smell it in the rooms and the doors aren't soundproof.
Location's handy being so close to the train station but It's definitely overpriced in my opinion.
Great little hostel in the heart of Kazan. The only complaint I'd make is the poor security on dorm doors (one key for everyone).