A quick google search will point you in the right direction.

To provide our buyers the greatest probability for success, we cast a wide net to evaluate ALL vacation rental prospects and narrow it down to the handful that meet the search criteria. 

As long as the ADU is under 900 sq. ft. and meets the state building code, there will be no variance or special permit needed, so no ZBA or neighborhood meetings.

I'm looking to purchase my first rental property and have been searching for a deal that would generate positive cash flow based on my projections.

If you're okay with that, you can buy in just about any MIdwest city, just make sure you know the landlord-tenant laws.We've broken down the City of Detroit's 183 Neighborhoods, can share if interested.

I'm also seeing lots of homes for sale that were used as Airbnbs, so I'm wondering if that along with these numbers may indicate it's an overly saturated market, and if these are signs that maybe I should keep searching for a stronger market, or just a property that cash flows given the average annual revenue?

I found this one on realtor.com by doing a search that only showed me properties with asking prices no higher than $150k

Quote from @John Fleming: I don't have any personal recommendations, but something below may help you in the search.Start by going to www.narpm.org to search their directory of managers.

My answer is: Invest in the market you know best.Within Dayton, there surely are decent neighborhoods to invest in.

Portage Park is definitely a prime-time Chicago neighborhood @Delroy Watson!