Repair requests come with authority by having an inspector, and can't be presented as the ramblings or whining of an uninformed/ picky buyer.  

Not that it will solve all your problems with this tenant, but a logging thermometer will supply you proof that the system is working if she starts calling the local housing authorities.

In retaliation, the floor tenant has proceeded to bang on the door of the upstairs tenant and poke the ceiling with a broom stick whenever they feel that the noise is excessive.

And I don't think anyone has ever done as well as explaining the investor mindset as he (and his co-author) did in Rich Dad Poor Dad.  

Do you know average property appreciation last year was in excess of 20%? 

If so that’s good and you have to figure out what you are going to do with that excess.

They also only seem to operate in markets with excess inventory, Cleveland, Memphis, Indianapolis etc, where its easy to turn up houses, paint them and sell them to Californians.   

It may be worth it to install surveillance devices, even if just temporarily, to provide the authorities with footage. 

If you are buying in the right locations, you can INCREASE your cash flow and REDUCE your risk by having your rent properties fully leveraged and using the excess funds to by more rent property. 

Zane,We represent over 50 markets for home Insurance and only one will consider Knob & Tube and then only if it is less than 10% of the building so the Excess/Surplus market policy would be the option on this property.