Pick a base for the evenings as well as the trains
For a first western Netherlands trip, choose two bases rather than commuting to every place from Amsterdam. One suggested pairing is Amsterdam or Haarlem for the northern part, then Delft, Leiden or The Hague for the southern part. You get evenings in the place you came to see and fewer repeated train journeys.
Keep Maastricht for a southern leg with time of its own. Giethoorn needs a railway journey plus a bus connection, so it belongs on a full outing day rather than in a spare afternoon between museums.
Tap correctly, or buy the specific ticket first
NS accepts contactless bank cards and devices for ordinary second-class travel without a discount. Check in and out with the same card or device. A phone and the physical card linked to it are separate travel tokens.
For a group travelling farther, NS’s 2026 prices list an Off-peak Group Ticket at €38.50 for two or three people, with €4.50 for each extra person up to seven. Each traveller gets a one-way ticket. For three people that is about €12.83 each, so compare it with the individual one-way fare and the permitted travel times before buying. Short trips can still cost less individually.
Put a useful free visit on the calendar
Eindhoven’s Van Abbemuseum is free on Tuesdays from 3pm to 5pm. In Leiden, the Burcht gives a view over the centre without an admission ticket. Book your other museum visits around the opening hours and collections you want.
Market days can solve lunch too. Leiden has central markets on Wednesdays and Saturdays; The Hague’s Haagse Markt runs on Mondays, Wednesdays, Fridays and Saturdays. Leave time to eat instead of adding another town to an already full day.
Keep the room calculation personal
Use the site’s city figures as daily allowances, then replace the accommodation amount with the actual room bill. A dorm bed and a private room represent different purchases. Only split the private-room cost when someone is sharing it with you. Add travel between cities separately, including the return trips caused by your choice of base.