First I'll state the problems with this hotel: it's on the expensive side for what it offers, and doesn't even include breakfast in the price. If you pay for breakfast, you get very little even compared to 3-star hotels, for quite a high price. There was also no refrigerator in our room (they charge extra for this!). There was no kettle in the room, maybe because they're trying to be environmentally conscious (not sure).
Other than that, I really have no complaints. The location is almost as good as it gets, it's close to the major museums of Amsterdam and a number of tram lines to the center (we mainly used 5, 16).
The rooms were large and clean, and everything looked new. There was a large bathtub and everything was provided for, with enough glasses, towels, etc. The aforementioned inconveniences posed significant problems for us, but it's hard to complain about something that seems to be acceptable in most Amsterdam hotels. Still, maybe this is something that all Amsterdam hotels should improve (learn from e.g. Italy) instead of tourists having to get used to it.
The staff members were helpful and we were able to acquire the iAmsterdam City Card at the hotel itself. The hotel has a large lobby where one can sit and plan the day's itinerary while talking to the staff.