My husband and I had a great stay at Willem's. Willem's roommate Dan helped us get settled and let us check in early, which was incredibly kind. The bedroom and shared bathroom were perfectly clean. I wouldn't let the faj. Willem and Dan were quick to respond to any questions we had. The location was amazing. It was super easy to get there by train and bus from the airport.
Note that there is some noise from the road at night, and you're going to share the common basement space with other people. If you're not ok with a little noise and meeting other people, then this probably wouldn't be the place for you.