Plan a 5 day nature getaway in Europe

I love getaways to unique places with my girlfriend and our now 7 month old baby. But I don't enjoy researching and planning them. I'm hoping we can find someone with passion for trip planning to explore destination and accommodation options for us.

The ingredients of our dream autumn getaway:

TRAVELLING
- Max 10 hours driving from Silkeborg 8600, Denmark
- Leave on 16th of October
- Return on 21th or 22nd of October
- Night ferries are also an option instead of a long drive

ACCOMODATION
- Most likely Airbnb, but other options are welcome (please confirm availability)
- We would like to stay in a unique and peaceful housing that resides in nature, preferably near mountains or lakes
- The house has an outdoor spa and/or a sauna
- We have the whole place for ourselves
- Complete housing (heating, bathroom, kitchen, wifi etc.)
- Budget €150-200/night

ACTIVITES
- We go a few hiking trips in the area
- We hang out in the house, read a book and play board games (we can bring our own :))
- We may go on a nearby city stroll and have lunch

We are open to all countries and hope that Covid-19 will not cause issues (we're fully vaccinated)

YOUR DELIVERABLE
Present 2-3 options for where we could go, including specific, available Airbnb listings or similar
Share a few recommendations for the trip

Attached are images of what attracts us. We prefer to offers from Europeans that knows the countries/areas that they recommend.