Stayed there one night for a conference. I arrived first thing in the morning, and I could get the room already during the coffee break at 10.30. The room was at the very end of a corridor, and thus it was very quiet as nobody passes the door and it is far away from the lifts.
The room was spotlessly clean and had a nice temperature, even if it was getting cold in Amsterdam at that time of the year.
Sleep quality is excellent, and I slept like a log all night, which sometimes is difficult if you're in a place for just one night. Service is quick and attentive, even when quite bus, as they were these days.
Ameneties are fine, and the wifi was functioning quite well, though the speed was not like breaking any records.
Breakfast was actually quite good, and as I got a good rate, which included breakfast, I had the time to enjoy it to the fullest extent.
The location of the hotel is distinctively like any other airport hotel - in the middle of almost nowhere, but the free shuttle service is really good and brings you to the airport in about 10-15 minutes.
Fine place to stay.