At ING, anything that is not standard has no chance. Only computers rule there.
You probably didn’t read my post at all? I had the consultation directly with ING over the phone, appointment arranged via the ING homepage. The interest offer came within a week, the interest rate was significantly better than through an intermediary. The financing was not standard, but a leasehold with 5% equity capital. Financing would also have been possible completely without equity capital, but of course then with a worse interest rate. That’s why we contributed the 5% (the remaining equity capital is unfortunately currently tied up illiquid with us). Because we took a little time to respond due to job overload, the ING employee even called back to ask if we still had questions and if the offer was suitable.
So nothing standard, nothing just computers.
My advice: Call ING, get an appointment for a consultation (by phone or via video call). This is your house bank, and they have first rank on the property. So the path is clear.
Good luck!