The fact that you have saved up so much equity is really respectable. Just for the money alone, you could get a nearly new house elsewhere for +100k and be up to date without any renovations for the next 20 years. You can find similar plots of land elsewhere as well. I definitely wouldn’t pay almost a million euros for the old house. Honestly, it doesn’t look good either, and all the repairs and small updates alone add up.
Look for another residential area and live debt-free in 5 to 10 years—that would be worth the effort of relocating and possibly changing jobs for me.
The other thing is renting out the upper floor [OG]. You have to be aware that you don’t necessarily get tenants immediately for such an old house. And even if you do, they have wishes and demands as well. If something breaks, they turn to you, which means more costs. When the tenant changes, and in my experience that happens every three to five years at the latest, you have vacancies and the income stops at first. So a rental apartment is not a steady source of income. Also, you have to like having people constantly in your own house; otherwise, you might as well continue renting.
I find the plan pretty strange, to confine your life to such a straitjacket just because of the quiet and rural location.