Incredibly hot, there was only one window in the bathroom and it hadn't been (and couldn't be) opened. These were in the centre of the building causing the rooms to heat up as well. Other than that everything seemed good.
Guy at the front desk was incredibly helpful, gave good tips for both Zagreb and our next city, made our stay a lot easier, recommend talking to him. Kitchen had good facilities and everywhere was clean. Large bag sized lockers in rooms and locks on door so very secure. Very close to a tram stop but not a comfortable walking distance from the city center. Directions on booking e-mail were really bad (wrong street names and numbers) would recommend planning your own way there. Very happy stay.
Got put in a double room instead of dorms which was nice. There was no air-con in the room (online it says there is) meaning it was incredibly hot during the night and difficult to sleep. We were next to what we presume was one of the offices and they played a lot of loud music at unsociable hours. There was a dog kept outside the room who was very noisy. Beach they recommended was poor so would suggest people go to those nearer the city center.