If this place is available, book it! It was a perfect home base for my wife and I, but it would work with 3 people as well. 4 people might be a bit cramped.
Before we arrived, Marie made sure I knew all of the check in details and she gave me recommendations for bike rental, canal cruises, and fun places to eat in the city. Then, we asked for an early check in, and Marie accommodated us even though she was out of the country. We were able to drop our bags off early, and check in at 12:45pm, as soon as our room was cleaned. These sorts of things just DO NOT come with hotel stays. It was personal and unique. The place is very CLEAN (much more than we expected), and the boat in walking distance of all of everything we wanted to do and see downtown. It's about 8-10 minutes walking distance to the Amsterdam Centraal train station, so you can make it to the airport in under 30 minutes if you time the trains right. We rented bikes and could keep them 20 feet from the boat. I HIGHLY recommend staying here, and I would definitely book this place again. Thanks Marie!!!