There's also this
https://www.schipholhotelshuttle.nl/information4
The Schiphol Hotel Shuttle is an easy and comfortable airport shuttle service to and from the Schiphol Airport and your hotel.
It's a shared van service, so depending on the locations of the various hotels of your fellow pax, you may get a bit of a tour on your way to your Central City hotel.
But it is easy and affordable, if a taxi is too dear.