This place is located in a very privilegiate position, but the price is still very good. People were nice and respectful, so the night we spent there was as ok as possible for a room-sharing hostel. The apartment was generally clean, but the sheets were very old, had holes and were modestly clean although we were charged 4 euros to get it. The host wasn't there when we arrived. The person that welcomed us was friendly and precise, although he could not give us a receipt for the city taxes that we needed, and told us that the host would have done it later. We had to leave in the early morning and at the end we didn't get the receipt.
I would recommend this place for the ones looking to stay in the heart of Venice, meet people and have a clean and cozy place to crash at night, but still cheap enough with respect to the average of prices.