yeah first order of business would be upgrading the insulation envelope. beyond that, a good clean, some TLC and full refurbishment of the garden room… and you’re good to go
Do it. One of the best houses I have seen.
Incredible potential.
Then I'd have to become Scottish, convince partner that up there is better than Berlin, and you can sell it to me when it's almost done.
I'd get a goat or two, you need every penny you can to pay the heating bills.