I recently did a week long tour of Europe, and this was, by far, the cleanest, friendliest, and overall best Hostel I stayed in. The staff planned some fun nights out (I was there for Halloween), but if you wanted to stay in, there was a chill group that watched movies. The beds were quite comfortable for the price. The only downside was climbing the stairs drunk when I couldn't figure out the elevator :)
We had an amazing time at your hostel. Loved the bar and all the staff, their recommendations for local fun were great. Definitely would stay here again to experience all Amsterdam has to offer.
The hostel had an amazing atmosphere, the rooms were clean, comfortable, and secure, and staff was very friendly and helpful.
The thing I liked best was the atmosphere - there were lots of young people, and everyone was very friendly to tourists.