My advice is not to waste your money on testing clean with bleach water and buy a mildew mold suppressant from hardware store it's a chemical you put in a pump up sprayer keeps mold from coming back if on a painted surface get a fungicide paint additive and repaint area.

. - granite colors will change but solid surface counters are here to stay, doesn't matter what they are made of. - those vertical glass backsplashes, separate wine fridges, and drawer appliances will definitely date a place.

My wealthy, old landlord friend gave me some great advice a long time ago, "The whale that surfaces gets harpooned."

From a surface view it would appear there are "no rentals available in the area" (therefore, little or no economic opportunity for rentals) Investment homes in these areas are leased quickly, with multiple applications at elevated rental rates.

In the long run I wouldn't make a stink about things like this everytime, but I find it a good exercise to understand options for when a bigger dispute may surface.

It's 9am and I have to catch a plane to Las Vegas at 12 but instead I'm battling surface streets to get to downtown LA this morning to the IRS office.  

It sounds a bit dodgy on the surface of it, but obviously I am jumping to conclusions since I have no real info.

The tenants had extra people sleeping on every spare surface, hypodermic needles embedded in the carpets, used diapers thrown in a corner, holes in all the walls, cabinets torn down, cigarettes put out on every surface. 

On the surface, sounds like it's potentially the right product for you.

But I'm not sure if paint will even stick due to dusty gravelly surface.