But from the 50's, most of the wiring is likely olde cloth-covered NM (romex) that is worth replacing.

The kids' clothing and toys were on the floor in the sewage and it had clearl been that way for more than a week.

You can make minor adjustments based on the type of appliances (dishwasher, clothes washer and dryer, air conditioning, etc.) and the size of the rental.

I am 99% sure no one smokes in the stairwells, but can confirm the tenants smoke outside, and the smoke on their clothes may be coming in. 

The upper tenant with insurance had all her possessions professionally cleaned and she did have some issues with clothes shrinking and the insurance company was not nearly as responsive as should have been.

As a matter of practice if I'm going to court I don't wear nice clothes.

IE , sauna, steam room, yoga classes, etc.

Even if she never brings another item home, if she hangs out where they are then she can end up bringing them back in on her clothes.

I dress like a vagrant and my car is scattered with tools, plumbing parts, str checklists, work clothes, a tarp, air tire pressure gauge(gotta fix that leak), box of  1 5/8 screws, and still my kids manage to find a place to sit.

Not all brokers are cut from the same cloth!