Happy New Year everyone

We have 10 days, traveling w husband, 18yo, and 30 yr daughters.
flying into Brussels, 3 of us have been to Paris and 2 of us to Amsterdam before.
What would you suggest?
We will be renting a car ( I don't want to drive in Amsterdam or any large city..Paris etct.
Would you suggest Netherlands and Northern Germany and swinging back to Brussels.
I do love the small towns..In Ireland Dingle etc not so long ago , I loved it.
Thank you for your input.

Luxembourg has some pretty rolling hills and cute small towns. Belgium has some lovely towns like Leuven, Ghent, and Bruges, but the countryside is pretty flat and not especially appealing for scenery.

Brussels
Luxembourg
Mosel Valley to Koblenz and Rhine
Up Rhine to Cologne and Aachen
Southern Netherlands to Belgium

(returning car in country other than you rent it may cost a lot)

Mosel Valley is an absolute gem and one of Europe' most scenic driving venues - the Dutch flock here 'to see hills' one told me once:

https://www.google.com/search?q=mose...w=1920&bih=949

Stay in a cute riverside wine town like Cochem:

https://www.google.com/search?q=coch...w=1920&bih=949

agree with Andrew. Just back from Bruge, Ghent, Antwerp and Luven and Lier (last 2 were great little towns). Went by train which ws very easy, so by car--no knowledge.

Yes if doing Belgium only go by train - and all those cities are wonderful.