Without more information, this seems like a huge risk for a landlord with zero upside.
Long term leases for renters who are occupying the premises are low risk.
Short term leases are much higher risk and increase the likelihood of damage, vacancy, and turnover.
You are offering none of the stability and all of the damage and risk potential with this proposed arrangement. You aren’t planning to live there at all? And your credit score is subpar?
If people don’t like the space and don’t rent it on AirBnB, can you cover a year of rent on this second property?
What is this “speech” you’re giving to these landlords to try to convince them this isn’t a terrible idea? Are you offering significantly more money than an occupying tenant to make this deal more attractive?
I just don’t see someone agreeing to this proposition on the facts you’ve provided.
