Stayed 3 nights at this hotel. It is in a great location with a 2 minute walk from the central station and right next to some good bars and places to eat.
We arrived early and our room wasn't ready but the man behind the bar allowed us to leave our case in the secure area while we went for a walk and a drink until the room was ready.
The room itself was good. We stayed in the double deluxe room in the attic with private en suite bathroom with jacuzzi tub which was great. The furnishings in the room were a bit old and battered but everything was spotlessly clean every day with fresh bed linen and towels.
The hotel provided earplugs for guests but we never needed them. It was quite noisy as you are on a busy street with lots of bars and the street cleaners are out early in the morning but this didn't stop us from getting a good nights sleep.
As others have mentioned the stairs are very very steep but that is common with the old buildings in Amsterdam. There is 3 sets of stairs to reach the attic rooms so it may be something to avoid if you aren't very able!
The pub downstairs seemed popular at night but we never used it so can't comment.
Free wifi was a nice added extra.
In summary, for what we paid it was a good deal and we would definitely stay again.