Not OP, but I’ve been doing this and found that contacting people on AirBNB and making an offer often (after a bit of haggling and false starts) will land a great place for not much more than a regular unfurnished rental. I think a lot of people get into AirBNB dreaming of big $$ but then realize how much work it is to coordinate dozens of different guests each month to maximize $$ and then ultimately like the idea of one renter for a few months to give some relief.

Also, the market of people specifically trying to rent furnished long term rentals is very small and they tend to aim to “executives” that are in town for a period of time before buying their own place. They charge accordingly. It is a big red flag for me to see someone or a company marketing their furnished rental as “executive suites” or similar