The place is beautiful! I visited Kinderdijk back in 2014, as a one day trip when I was visiting Amsterdam. I took a train to Utrecht and a bus from there, even tough afterwards I realized that going from Rotterdam would probably be a better option (shorter bus ride). I am not sure if it is still so now. Anyways, I loved the place and was fascinated by the fact that some of the mills are still occupied (people actually live there!) :)