I also thought about whether I was entering too high or too low or whatever interest rate when I closed the deal 3 years ago. Watched, waited, and cursed for weeks.
Now, with a bit of distance, it’s nonsense to care about the interest rate you enter at. You close the deal when you need the loan and optimize with special repayments. Besides, it makes much more sense to think about how to structure the loans than to look for where you can save 0.12% interest.
While others wonder why they took a building savings contract and hardly paid off anything or mostly paid interest, I can think about what to do with the free budget that arises from the paid-off kfw153 loan (in 3 years).
What I mean to say is, don’t obsess so much about interest rates, but consider the other levers.