My stay at Generator Hostel was fine - lively animation during ADE, always people hanging inside or outside. The downsides are that the extra fees and the overall comfort - the 6 people bedroom are absolutely tiny with 1 bathroom and no privacy, the floor gets dirty way too fast and you can't open the windows, so smells linger and accumulate. The major downside is you are often woken up either by your roommates coming in late or leaving early. Lastly having to pay fees for checking out at 1PM instead of 10AM, for leaving your luggage in a locker and paying 3,50€ for a bottle of water is a pain.