Then you just execute specific strategies in specific micro markets that will deliver the number$ you require.Simple.There are no individual properties, just a series of them connected by this plan, where every decision you make is based on how the exit (your cash) from one property leads specifically to the entrance of the next...and so on. 

I picked up the properties for a heavily discounted price (because they had sat on the market), and had no problems finding highly qualified (and high-earning) tenants that made the place cashflow right out of the gate.Another example: I once bought a property in an A class neighborhood that had an awkwardly-placed stairwell inside the front entrance, which turned off other buyers.

Something pretty turn key in a good area could be a great entrance for you to get rid of a lot of those fears.

For example, if you have an in-law suite with a separate entrance, you're not allowed to rent it short term.

If she wants to stay in the same area there are high rises nearby which have a 24 hour concierge and a secure entrance.  

Just doing my part to inform anyone who may be discouraged by your words that if they work hard enough to educate themselves, they don't have to abandon the dream of REI just because they don't meet your personal entrance requirements. 

Still a good deal, but my question is, why would they ever rent something like that over another similar house that doesn't have someone living downstairs (again - it would be completely separated with separate entrances as well - we would never see each other, but still). 

From my understanding, ADUs don’t necessarily require that they must maintain same entrance as the principal dwelling in and out of house.

Depending on your budget and neighborhood restrictions, there are homes with in-law/guest suites attached to a single-family house with their own entrances.

I can see a certain amount of people not comfortable with being able to see full view of the kitchen from the front entrance.