We (a couple, ~30yrs) only stayed for one night. We had been on a hard biking tour and had to get up at 6am to catch the ferry.
However any sleep before 12pm was completely impossible, the place was extremely noisy. Walls were very thin and there was constant noise from the hallway and outside the window of footsteps, children running, screaming, laughing, crying, doors slamming, beds and furniture moving around. Other people got desperate too and was slamming the wall to get some quietness, but with little effect.
Also we were not aware that sleeping bags were not allowed, so we had to pay extra to rent bed sheets - This should be made more clear when booking.