Pay off heavily or invest minimally?

I recently bought an apartment and it is rented out. I have an interest rate of 3.7% and the remaining debt is around 200,000. I have 1% repayment and can make a 5% withdrawal each year (which I definitely will). I'm thinking about repaying the loan in full after five years. I want to invest the money in the following ways: Either with low risk in government bonds or some fixed-interest items Or: in various ETFs, but these have been so strong lately