Sheng X.
Yelp
If you are at all sensitive to noise - stay away. Stay far, far, away. Otherwise, by all means, you should stay here on your next trip to Amsterdam!
But seriously, you can hear everything. The building is primarily constructed out of wood, so you can hear people walking around you, above you, beneath you. I had a incredibly hard time falling asleep, because every step from the person living above us sounded like they were stomping around and it would shake the fixtures in our room. And then the next morning you will wake up to the sound of more footsteps. It's wonderful. You hear it on all the floors, btw, so have fun with that.
There are obviously other benefits to staying at the Zoku, but I won't go over them here, because they are covered in great detail by all the other reviews. In fact, all the positive reviews were the reason I decided to try this place out. I'm glad I did, since I wasted over a thousand Euro to stay here for four nights. It's actually priced higher than the Hyatt Regency right down the road, but I thought, hey, this might be a cool new experience. Wow, was I wrong. Won't be making that mistake again.
If I was 20 or 25 I could see myself staying here and enjoying it. However, there are certain luxuries and amenities that you expect after staying at 4 star and 5 star hotels, especially since Zoku is priced in that general range. That's where the hotel definitely falls short, so just remember that ahead of time. If you're still young or young at heart, go for it, you will have a great time. But if you don't want to become best friends with the rest of the guests at the Zoku, stay at the Hyatt Regency or one of the hundreds of other amazing hotels in Amsterdam.