I was in Amsterdam for 2.5 weeks for work and this place was perfect. The location is ideal - close to the metro station, a nice walk into the centre and far enough outside of the centre to get away from the rowdy tourists.
The market in the street below makes the best Stroopwafels, which I would recommend to anyone visiting :)
David was really friendly, and made check in really easy. He also came and changed my sheets and towels half way through my stay, which was unexpected and really appreciated!