@Emily K.
I had two rental arbitrage AirBnB properties (yes I had permission from the landlord to do so). He was very interested in seeing how his properties would perform as STR's. So basically he got a free consultation on how his properties did by allowing us to rent them and put them on AirBnB. He also received a very fair rent and his properties were always show ready with us taking such great care of them and them being cleaned and touched up regularly.
So for two and half years it was very viable and mutually beneficial. However, then COVID happened and we had about 3-4 months with no revenue all while we continued to pay the rents. And we also had one AirBnB property that we owned that we had to make mortgage payments on while it was sitting empty for 3-4 months. So with the 3 properties running dry for 3-4 months our reserves were wiped clean. Thankfully we weren't like a lot of people I know that spent it as quickly as it came in. We survived and eventually ended up not renewing our leases on the arbitrage properties just with all of the uncertainty over the past year and potentially next year.
All this is to say that it is a viable business model, however you may have more challenges with the current state of affairs to get a landlord on board with the risk. Also, be sure to keep plenty of reserves for when the stuff hits the fan.