Starting to look at details for Amsterdam. The Banks Mansion website mentions this shuttle company:

https://www.schipholhotelshuttle.nl

Rate for two is 37 euros from airport to hotel. You can book online. Not a private transfer, it will stop at other hotels. Cheaper though than the tourist shuttle which is 60 euros.

Just put in Uber for an estimate - UberX 26 - 36 euros, Uber Black 45-59 euros.

Leslie