Matthijs' flat is in a great location we only stayed for two nights. It's about 20 minute walk from Amsterdam Centraal, but can easily take the light rail that will take you to the end of his block. Small space for four people. Walls are very thin. You can hear everybody walk in/out of the building with the entrance hallway next to our flat. Unfortunately, we were woken up by the police and city workers at 8 am (not the fault of Matthijs), and were forced to let them in for a random building inspection.