I would be very careful about what neighborhoods you invest in, though; Cleveland has some serious war zones. 

If I live a busy life and don't have the time or care to invest on my own, but want to put, lets say $200k to work, is a 15% cash flow return reasonable? 

I have had a couple of clients just get the loan approved with the long term rates and then the bank really doesn't care how they get it rented out after.

Unfortunately, this is generally catered more towards folks that don't know, don't care or too focused on a few bucks. 

Some parts of KC is not great so you do have to be careful.

They take decent care of the property, but I would get texts all the time telling me to fix many things (some valid, some completely unnecessary) and would get upset if I ever denied any of the requests.

But be careful with your trial.

It's a fairly unregulated space (charging grandma $750 to puts around for 3 hours, after moving the old box from the horizontal sensor, which was the only problem with the garage door to begin with), so some combination of carefully reading reviews (you have to actually read them to make sure it's not 200 fake reviews), and maybe not giving them the full contract all at once, is in order. 

I think every market and every person have their own reasons, but here are some thoughts from a property manager.Pros for self managing / cons of PM- Keep all the revenue- You have 100% control- You own listing, photos, etc- Nobody will ever care about your investment as much as you do.Cons for self managing/ Pros for property management- This is a 24h / 7days a week business and I imagine you have at least somewhat of a life I imagine. 

Using a large RV or boat for business purposes offers potential tax benefits, but it's essential to navigate IRS regulations carefully.