It would actually be a net PROFIT given the huge increase to tax revenues. 

It sounds like you are overly confident in your Excel spreadsheets..... 

The median home sold price reached $582,329, reflecting a 9.7% increase from the previous year, with a median price per square foot of $325.

But with a co-living setup, renting out each bedroom separately at $850 per room could generate $4,250+ per month—a 70% increase in rental income. 

Quote from @Jonathan Blanco: Is it worth seeking lenders with $0 lender fees (such as origination, processing and underwriting fees) or do they just get that money by increasing rates and charging higher points?

The next deals came much easier as my confidence grew. 

The question that you need to ask is what is the 10% increase that is allowed based on? 

The country's continuous population growth, coupled with its high demand for urban housing, positions its real estate market for steady, long-term price increases.Over the past decade, cities like Berlin and Munich have seen remarkable growth in property values, with an increasing number of investors betting on the continued upward trend.

The increasing barrier to entry results in fewer new STR's coming available for sale, but also fewer options for guests to rent. 

I say with some confidence if you keep the condo 10 years, you will be glad you kept it.