I would have told the social worker that they will be spending more on hotel and food than it would cost to get her current in the rent, but that the tenant will obviously benefit more as she now won't have to pay for food. 

Honestly, I don't see the benefit of earning what could be Cap Gain money, but put it in a deferred account to someday pay earned income rates on it. 

The benefits to a low cap market are the returns on value add are magnified.

Just don't refinance unless it makes absolute sense.Because it would be another house hack/primary residence, you get the same benefits as before. 

Utilize the benefit of a conventional owner occupied home loan, and place the lowest down payment available to you without PMI.

Just be aware that moving them in can scratch expensive flooring if they are not careful etc so that is the benefit of providing them. 

I changed strategies and started buying single families and they have similar returns (-$150 to $-300 per month when figuring PM, vacancy, repair, cap ex) but have the added benefit of being sellable to anyone, unlike a 2-4 unit.

The question is: are there benefits to this person requiring vaccines from her tenants.

Either you want the tax benefits or show that you are cash flowing(hurts your DTI).

Before I consider investing in their projects, I am looking forward to making my own investment to build experience, gain confidence and learn the way to do it, so I can repeat the process… So, I guess, that only because my thoughts for real state changed, I will give these guys the benefit of the doubt… Thanks again Mike for sharing your thoughts with me, this is awesome!