Roel (and his cat) made us feel very welcome. Although he wasn't there on our arrival he made provision for collecting the key. He was very friendly and hospitable and we thoroughly enjoyed chatting to him. The accommodation was interesting and comfortable and the breakfast was substantial. Roel even took the time to give us a tour of the workings of the windmill which was fascinating as it is a working mill used for water drainage.
There is easy access by bus (or walking) and tram into central Amsterdam. Well worth a visit!