Also, if your wife and her parents were the real estate investors first, why aren't they weighing in? 

Esprit if it's causing issues with other (good) tenants and they aren't following the rules of the lease I wouldn't renew.

Can you provide the address of SFH with ADU & JADU additions?  

@Tony SchmuckerYou've done great narrowing it down, but focus on cities you and your spouse would enjoy living in—numbers aren't everything.

The ADU is a good idea for property maximization, but unless it has a separate driveway, it will push your rent in the main house down some because then you aren't renting a single-family house on a lot by itself.

Apartments aren’t an alternative to these people.

But by building a successful short term rental business on someone else’s property aren’t you giving away the increase in value of the property resulting from your efforts to the property owner?  

If this seems like an avenue you're interested in there's a PassivePockets conference in Columbus this May, it can be hard to find syndication conferences that is geared toward LPs (the passive investors) aren't actually just a sales funnel for one particular group 3.

But I think any experienced investor would agree that if you aren't doing value-add when it comes to real estate investing, you aren't actually investing.

I also find it hard to believe the husband can't find a job or they aren't paying partial rent.