I would keep your businesses separate.

If it's an apartment building, individual units can't be sold separately.

Is it best to find a property that is already divided or has a separate unit?

Taking massive action, networking, finding where you can add value and then executing is what separates the true entrepreneurs from wantapreneurs. 

How separated are the primary from the ADU? 

I'm toying with an idea for a system that would handle guest communication workflows using AI, analyze the feedback, and also trigger surveys post-stay/review for tracking performance.As far as I can tell, there's nothing out there that does those 3, but perhaps there are separate services that provide some or more of those.

And this is separate from regular maintenance my property management companies took care of and deducted from the rental income.So the moral here is that RE is great but you can’t depend on cashflow.

Maybe I misunderstood him or he meant something else, but I don't see how paying the same amount it would be regardless but just in 3 separate payments helps reduce the mortgage more than it would've been over time.

I’d ideally like to keep the property management financials and operations completely separate from the employing broker during that period.

I understand its good idea to have a separate bank acc for rental income.