Have you warned the tenant and girlfriend about the presence of children? 

Typically the below are disqualified:Disqualified PersonsThe SDIRA can not be used to fund projects for persons to include: Parents, grandparents, your spouse, your children, your grandchildren, and all of their spousesAdditionally, the disqualified persons can not offer goods, services, or facilities regarding the investment, ie. contractor work, real estate commissions, etc.

Not exactly....a gift amount gets reported but there is no tax, it simply reduces the tax free cap of any future inheritance, at least from parents to children. 

Furniture and mattresses with bed bugs .

I Make it easy for people, I let them leave large pieces of furniture and they don't have to clean up because we do total renovations on each apartment. 

I purchased a property for myself and my children in Sept 2020 with no knowledge of any of this real estate investing.

in addition, we are not looking to sell any once purchased and plan to hand them down to our children at the appropriate time.  

Previously, the labor force had been shrinking as residents gave up looking or chose to stay home to care for children or other family members.

I’m looking at some properties around the southern orchards and driving park area in Columbus by children’s hospital and was wondering if anyone is familiar with this area and if it’s a good place to look for investments?

My wife and I just added our children to the deed of our house, which we currently have a mortgage on.