Recommended sites and stopovers en route to Stockholm from Hook of Holland

[Gazman]

Hi
I’m driving from Hook of Holland to Stockholm soon and would like any recommendations to stopover a couple of times for a couple of nights en route in the Cali.
Somewhere around Hamburg in Germany, Odense to Copenhagen in Denmark, Malmo to Stockholm in Sweden.
Any hints and tips for driving through these countries also appreciated.
Many thanks.