Excellent cost-benefit ratio. The hotel is very well located being next to the Tropen Museum and very close to the Brouwerij 't IJ brewery. Ease of access is total: in front there is a tram station (taking 19 you arrive quickly at Museum Plein). If you need the train, the Muiderpoort station is about 7 minutes walking away.
The staff is very attentive and helpful, and the breakfast is very good.
The downside was that we were unable to adjust the heater. The room was very hot, even with the heater on minimum. We had to open the window (detail: was January, that is, it was winter in Amsterdam).
Overall, we enjoyed it very much and will be staying again at Tropen.