Financing offer with special repayment from my real estate agent

Hello, I have received the following offer and wanted to ask you for your opinion:
I already have a plot of land.
Bank:

Effective	Loan amount	Fixed interest period	Monthly rate
1.07 %	252,000 €	15 years	693€

Remaining debt approx. 159,000€

The remaining debt will be repaid through a [Bausparvertrag] in the amount of 150,000€ and a 9,000€ special repayment. This will be saved concurrently with 240€! So a total monthly burden of 933€.

Effective	[Bauspardarlehenssumme]	Balance upon allocation	Repayment phase	Monthly rate
2.647	approx. 109,000€	approx. 41,000€	12 years	approx. 830€

Overall, I will be finished after 27 years. The interest is already secured until the loan is paid off and if interest rates stay low, I do not have to take out the loan from the [Bausparvertrag].

What do you think of the offer?


Thank you in advance

PS:

Alternative from the bank

Effective	Loan amount		Fixed interest period	Monthly rate
1.60%	252,000€		27 years	959.70€

Hm 830 • 12 months • 15 years = 149,400€ that corresponds exactly to the remaining debt!! What are you still paying back for 12 years

I pay 933€ for the first 15 years. Of that, 693€ is the bank installment and 240€ is for the [Bausparvertrag]. After 15 years, the outstanding balance on the bank loan is 159000€. I repay the outstanding balance with the [Bauspardarhelen] + the credit balance = 150000€. I repay the [Bauspardarlehen] over 12 years at 830€ per year.

Have you had an offer for a 20-year full amortization loan?

What exactly does that mean?

What exactly does that mean?

No home savings contract. Simply a 20-year fixed interest period.