That's how it looks. Student loans paid off and the station wagon financed back then paid off. Then paid the second car in cash. Otherwise, have never taken out a loan.
Yes, everything is fine as far as I can see. I don't see any problem with it either. You can easily handle the monthly repayment rate – possibly, depending on your wife's income increase, you might aim to increase the repayment.
You are still young, you studied, you treated yourselves a bit and also paid off loans, cars, etc. – you don't have to justify that – nevertheless, you saved another €20,000 without parental support.
I assert that in 50% of homebuyers at least half of the equity (if there is anything significant) is contributed by the parents. From that perspective, everything is good.
You have a decent household net income, and the loan amount is not unbelievably high... I would definitely go for it.
With just under €5,500 household net income, every couple or small family should easily be able to manage up to €1,500 per month in repayments – it just requires developing a certain sense of saving; vacations and trips are still possible.