Today I did a kayaking tour of Getsewoud with my homebuild Nomadulino v01 (see http://www.perspektivo.nl/blogs/2017/05/nomadulino-v01-my-first-hybrid-kayak-canoe/).
Building of the Getsewoud Noord and Getsewoud Zuid neighborhoods of Nieuw-Vennep started in 1998. With respect to the history of Nieuw-Vennep there is a a short Wikipedia page here in English, https://en.wikipedia.org/wiki/Nieuw-Vennep, and a longer and more detailed page here in Dutch, https://nl.wikipedia.org/wiki/Nieuw-Vennep.
The nice thing about Getsewoud is that there are a lot of little waterways and almost all bridges are high enough to easily pass under in a kayak, canoe or rowboat. In addition there are many spots where you can park your car for free close to an entry point to the water.
However, as the water in this area is approximately 6 meters below sea level, the water in the area does not directly connect to neighboring canals and most of the branches simply end. So you do end up doubling back over the route rowed most of the time. The total length of the route is about 8.5 km, so it will take approximately 2 hours of leisurely rowing and enjoying the modern architecture bordering nature despite the towing lying under one of the flight-paths to Amsterdam Schiphol airport.
This KML file contains a Google Earth path containing the route: kyk-nieuw_vennep-getsewoud_route_09km54-20170514_212700 An image of map with the route is included in the gallery. The route is about 9.5 km long as drawn, but can be as short as about 7 km if only the main water bodies are included.
It shows my starting point, but if you look in Google Earth you can quickly identify numerous spots with either hard shouldered borders or grassy border where you can easilly access the water near parking spaces.