As others have mentioned, the boathouse is on a corner near a busier canal. It's not in the hustle and bustle of the downtown commercial area, but it does see a bit of foot, bike and vehicle traffic. I did have to sleep with earplugs while there, but I'm a light sleeper. My companion can sleep anywhere and had no issues. It really depends on the person!
The unit is about the size of a small studio apartment and is very conveniently located for an easy walk around Amsterdam. There's a fantastic Thai restaurant two doors down!
The bed was comfortable and the unit was clean. Karin was easily reachable for any questions we had.