Uh, yeah I'm gonna say this list can absolutely go into the garbage. Calling Denmark first is pure comedy due to the insane cost of co-working spaces, Denmark being the second worst country to integrate into after Sweden, insane rental deposits and the unreal taxes. (Researcher tax scheme excluded 😉)
Do you need a co-working space if you can just work from your flat?
Integration might be an issue, but I guess the foreigners population is enough to be able to socialise. I stumbled upon a channel by Americans explaining their experience in Denmark, they managed to make friends with other foreigners https://www.youtube.com/watch?v=4xMJWIExwgA&t=1
Yeah the rent/pay ratio for a lot of jobs won't work great in the Netherlands.
Amsterdam is one of the most expensive cities in Europe, so an income from another nation won't get you very far (unless you're coming from Australia or London, where pay can be proportionally higher for some roles).
It would be like living off a small town salary while paying New York rent.