A few years ago we went to Keukenhoff via a direct bus from the train station. We are planning on going again this year, but all I can find is to travel "across the A'Dam lookout by taking a ferry. Is this is best way to get there? Thanks!
Have you thought of looking at Keukenhof's official website? Every major tourist site has a "how to get here" section.
https://keukenhof.nl/en/plan-your-visit/how-to-get-there/
Yes, this is from their website.