A few years ago I visited the Rietveld Schroderhuis, and even though it's quite expensive to visit, I am glad I did it. At the tour they gave (you are not allowed to wander around by yourself) they told us a lot of info and it turned out the house had a lot of nifty things that you probably wouldn't have noticed yourself. When you visit the house, make sure you also visit the Centraal Museum (not too far away from the house, make sure you buy a combination ticket; it'll safe you money) where they also have a lot of furniture from Rietveld on display.