It’s an ok place to stay if you don’t have high expectations or need a lot of comfort.
However, the days I spent in Utrecht were some of the hottest of the summer with temperatures up towards 40 degrees Celsius. The rooms have no AC and therefore I found my stay rather unpleasant.
The staff apologised, and of course they are not to blame, but still, with the weather being the way it is and summers getting hotter and hotter, I found it strange that the hostel has not invested in some sort of ventilation, fans or AC. There is some sort of ventilation in the rooms but I had a feeling it was switched off during the night…
Would not stay again, especially during a heatwave.