We stayed a couple of nights in december (not the warmest month of a city). The heating was actually functioning only one day after we complained and it was cold the first two nights. The first call on the reception did not help. The guy said he can do nothing! No additional blankets, no sorry for inconveniences, nothing. We could also consider the opportunity to go to another hotel, but we had to pay on check-in before we saw the room and be aware of heating problems (aparently it was not functioning on the third floor).
All possible noise from the neigboor rooms was audible in our room.
I could load nothing on my handy browser after the connection to the hotel WLAN. The signal was too weak.
The beds were big and there was some comfortable furniture for sitting in the room.
Breakfast was full and delicious.
The hotel is located very close to the water. So the view on the harbor is fantastic.
You can reach Amsterdam very quickly by bus, which goes every 15 minutes, the last one goes around midnight. It costs 5 euro per direction.