I live in the Netherlands(Eindhoven) and I am considering doing short weekend/day trips around europe.

I know of two options. One is flixbus. Second one is NS international.

Yet another option is to take the train from Eindhoven to Amsterdam and then I would get more options.

I want to do short/quick trips every other weekend. And want to avoid the long waiting times at the airports.

When I am there I might stay the night at a hotel or return the same day.

The only one I have done so far is Eindhoven to Antwerpen via Ns international. Although there arent many Eindhoven to X city possibilites. I guess I need to first travel to Amsteerdam always?

Flixbus is good too and it guarantees a seat. Although maybe slower than NS international.

Need advice from anyone who has done this before.

What mode of transportation do you use? Do you use anything to save money?