Wishing you that everything works out! Just a note to consider that with a fixed interest rate for 10 years (your installment looks like that too?), it would be better to secure collateral for the period after that, when interest rates are higher again (which one must assume). Otherwise, even with special repayments, you will hardly have reduced the rather large amount of 224000 € and then will be left with 160000 € remaining debt and unable to pay the installment! Honestly, I find it strange that a bank would recommend a 1% repayment rate for this amount in today's interest rate environment - maybe you could at least partially secure the interest portion of the sum for the future on the side?
Best regards,
Kate