We spent 8 day's at Stef's place in may 2013. He and his wife Angela were perfect hosts -- everything was tidy, we got all the facilities, directions and information we needed (including advice on where to rent cheapest bikes which is an important issue in Amsterdam).

The flat is situated just perfectly -- in a residential area far enough from the city center to be quiet, yet close enough to get to, say, Rijksmuseum in about 15 minutes on a tram or a bike.

We can definitely recommend staying at Stef's to anyone considering a trip to Amsterdam.

Cheers!