A very good location close to most attractions of central Amsterdam - as long as you are happy with climbing several sets of very narrow and steep stairs. The bicycles are a great opportunity to move around the city independently - but they are Amsterdam-style which means extremely simple/rudimentary.
Hans is a very friendly, helpful and integrating host. The house and facilities have obviously been around for some time but work fine unless you only accept the latest and greatest in design and technology. Breakfast was simple but good and definitely sufficient.