Then decorate the place up, nice lighting, signs, etc.Then you can move the needle. 

They had cleared it, put some gravel in of some sort, fenced it with barbed wire on top, manual gate on tracks and flood lights in the corners.

.- All hardware should be present, property secured, and in good working order (e.g. door stops, light fixtures, faucets, toilet paper holder, hand & bath towel bars, drawer/cabinet pulls, hinges, door knobs/locks, etc.).- Carpets must be professionally cleaned or, if necessary, replaced if there is excessive wear.- The yard must be in good order with no debris, either natural or other.

C class investing, B class light value add, BRRR, etc... once you do that they will put the properties in front of you that fit your strategy. 

We tested it was not black mold and there were light spots with the lack of using the ventilation.

Check for stains Cigarette smoke can stain walls, ceilings, curtains, light fixtures, and lamps.

We had some clients that bought lighting at a flea market.

This is the simplest method, but it also means your tenants are more likely to abuse the utilities by leaving windows open with the heat or A/C running, leaving lights on, ignoring the toilet that constantly flushes on its own, etc.3.

maybe some light repairs after the tenant moves in...so your first few years after a purchase are typically stabilization, and you investing your money into the property.

So, if the surface was high gloss it may need to be lightly sanded or to use a product to take the sheen off of it.