We stayed in Willem’s apartment in September 2014.
The apartments was great. It is located in quite living area; there are two parks nearby – Oosterpark and Zoo - 5-10 minutes’ walk. The way from the Amsterdam Centraal is easy and short - three metro station and 5 minutes’ walk.
The apartments are on the second floor (European first floor). It’s large, clean, light and very comfortable. There is everything you may need. The owner will provide you with detailed instructions – you will easy to get used to. The most delighting thing for me was the CD collection =)