I've stayed for the second time at this hotel and was - again - pleased with it.
It's in a good location, near all the main attractions. If you don't feel like walking you can take the tram just outside the hotel to more farflung parts of town.
Rooms are quite large and quiet.
Service is excellent: I forgot some personal items in my room and when I called the hotel they immediately proposed to send it back to my home.
Don't hesitate to book it for a trip to Amsterdam, be it as a tourist or for business.