Matthijs' place is just off one of the main canals (which I won't try and remember how to spell, haha). Hotel quality clean room, even a little tray with make your own coffee and tea setup, silverware if you bring food back, and two big ole windows to open for ventilation.
Matthijs' was also great to talk to and had good inside information on what to look for and how to interact with the locals around Amsterdam. We really enjoyed our short stay!