Midterm rental arbitrage?

[Joel Philson]

I'm brand new to investing (aka no experience, no doors) and have heard on multiple podcasts that short term arbitrage can be an effective way to get started. I also keep hearing that STR is rather saturated overall, whereas midterm is chronically undersupplied. Is it a bad idea to do midterm arbitrage with a willing owner? What unique considerations might there be?

I asked this question in the Starting Out section, and don't have any clear answers yet. Any help over here would be greatly appreciated.