Our visit to Van Nelle factory was a bit disappointing. We (4 people) booked it via Urban Guides in Rotterdam without knowing that the tours are only in Dutch. The guide was not able or did not want to speak English so we just followed the group of Dutch people without understanding a simple word... There's no any place around the factory where you can get or buy any leaflet about the site... Hopefully after getting back home we found on internet a very interesting lecture which I recommend to anyone willing to visit this factory: https://www.youtube.com/watch?v=b-fihvWYnPc
The building itself is very interesting and really very modern and it is really worth to see it but get some background info before getting there!