I think most hosts give 5 stars unless there is a serious issue so even a 4 star is a red flag for me that I would check into. 

Red-Necks on UTV's were a disaster relief force to the effect of about 100,000x what the "command & Control" capacity of Big Government was. 

@Natalia Perlova if the switch is in a common area and you are having trouble with the tenant especially if you think they switched the burner off deliberately (it should be a bright red switch plate in our area labeled oil burner).

. - What exactly is the red tape you are trying to avoid? 

Quote from @George Red: Hey @Steve Johnson, I found your website but it does not explicitly mention HVAC and I actually was about to ask on the forum if anyone had a recommendation for a furnace repair job... not a big job, one unit in a duplex not working properly.

3-Any red flag in our current structure?

Quote from @Jay Redding: @Wade Wisner -  Most of the notes that we purchase we keep in our portfolio and borrow against them with private capital.

Every interaction with them has raised red flags. 

Housing shortages have more to do with boomers living longer and holding on to their large homes and provincial red tape.

Yes, the contractors were bad people, but there were hundreds of red flags waving in your face and you ignored them all.