We staied at yazar hostel during 5 nights. We were in room 113, downstairs. There was a problem with the toilets' evacuation. It really does not smell good (It smelt like toilets all day long!). And since there was no window from the outside, you could not ventilate.
It does not seem to smell bad in the other rooms.
Otherwise, peaple working there were very pleasant. The breakfast was also very nice. And the hotel was well situated 10/15 mns walk maximum from Ste Sophie, 10/15 mns walk maximum from emminomu).
I would definitely not recomment the rool downstairs. Request a room at 2nd or 3rd stairs with a window on the outside.
Best regards