Glancing through the article
https://cointelegraph.com/news/bitcoin-rent-agreement-argentina-landlord-tenant one would conclude adoption is striving in Argentina. Paying for a house with bitcoin sounds to me a mistake or lack of financial knowledge. Bitcoin is better than Fiat. Bitcoin increases in value and fiat faces inflation. Why then would one spend Bitcoin instead of fiat on a house rent which may expire in few years? Accommodating the Bitcoin can birth the person more money to pay his next house rent. But fiat wouldn't add any interest in the bank. Moreover the house owner will not hold the Bitcoin.
I would definitely have to agree with you that the money won't be able to gain any interest in the bank (at least not enough to be appealing), if you can help it hold onto your bitcoin and pay your mortgage in FIAT, however if you are in a bind and your landlord accepts BTC as payment then I would say that you're in luck although it is a shame you have to lose those SATs.