I understand some of the things you have to pay for such as utilities, WiFi, furniture.

I agreed to return $100 to her, as my purchasing the property ultimately resulted in her and her children needing relocation.  

It's really hard to assess damages in rooms full of furniture etc.

If you have children, can strategies that 'skip' your spouse be used to further minimize taxes or simplify procedures?

House was owned by man who passed away and children were selling property upon his passing.

The tenants are a family of 6 and the mom homeschools the 4 children.

I found a local rental listing on Zillow yesterday while doing some market analysis that said “suitable for one mature adult,” “no children,” and “not suitable for work-from-home”.

It could be a combination of dust from lead paint (like windows with lead paint being raised up and down) and little tiny paint chips that get ingested.This should help - https://www.mass.gov/the-massachusetts-lead-lawAlso, MA Fair Housing law says that you cannot deny rental housing to families with children under 6 years old because you have not abated the lead paint.Read up on the law, because self-abatement is tricky - and you can only do a limited amount.

Set up a parent LLC with children LLCs.

This property was relatively turn-key, but I've added some amenities to make it even more attractive to young professional renters (furnishing the common areas with relatively nice furniture such as a big screen TV mounted on the wall, added a Ring Doorbell/a SimpliSafe Home Security system/individual locks on each bedroom door to make my tenants/roommates feel extra safe, etc.)