Hein was very helpful and gave us lots of information about things to do. The location was good - within walking distance of most things, and just around the corner from the metro station for anything further away. It was nice and quiet, and is a good place to stay for one or two nights (we stayed for 6, and it was too small for that).
The main room was bigger than we were expecting from some of the other reviews, and the kitchen was small but workable. The bathroom was tiny, with a shower curtain that continually blows onto you because of the extractor fan. There is no basin in the bathroom so you need to use the kitchen sink.