My stay here was excellent. The place is quite spacious! And very comfortable. And has an entire wall of windows that lets in lots of light. And even though it is in/near the Red Light district, because this room is at the back of the building, it wasn't too noisy (you can still hear noise - so if you are an extremely light sleeper, this location might not work for you, but for me it was fine).
Another thing to note is that it is up 3 flights of stairs and there is no elevator (which was fine for me, but I could see how this might be an issue for some.)
The location is really really great. It's only about a 10 minute walk from Amsterdam Centraal train station. Also, being in the Red Light District, you can pretty much just fall out the front door and land in a number of great restaurants, bars, shops, etc.
The next time I go to Amsterdam, I'm definitely staying here again! It was a great find. And the hosts are super nice and welcoming.