Edited to add: We've decided to go by train, and changed the itinerary a little too. See below posts.
We are planning a 10 night trip in mid-late March flying in & out of AMS. It will be two adults and one 4 year old.
Any suggestions or concerns would be appreciated. Is renting a car too much?? Is this cramming too much into the amount of time we have?
Day 1, arrive early AM, rent car and drive to Cologne, explore, stay night.
Day 2, Explore Cologne.
Day 3, Drive Rhine route, stopping at various towns, castles etc, 6 hours total of driving and ending in Maastricht for the night.
Day 4, Drive to Ghent, stopping along the way, with the Royal Belgian institute of Natural Sciences in Brussels as a stop.
Day 5, Explore Ghent by public transportation (Park at hotel)
Day 6, Take train to Bruges for the day, Could stay another night in Ghent and leave early AM, or drive to Den Bosch for the night for Eftling the following day.
Day 7, Eftling park for day, then drive to Amsterdam to drop off rental car.
Day 8-10, Explore Amsterdam with a day trip via train to Leiden or Haarlem (can't decide which, Leiden has the Corpus museum which my son may enjoy)
Day 11, Leave early AM to airport.
After more research about driving, I realized a car may be a hassle at times, but then figured if we didn't rely on it in Ghent, and obviously Amsterdam, maybe it would be worthwhile.