When I first started in my career I used to brush off these advances and say that's part of the job but now I have learned that my safety, wellbeing, and mental wellness far exceeds the financial returns of any of these potential deals. 

I can get some broad brush data from City Data.

Items like a stainless fridge with ice/water maker, brushed nickel hardware, always a washer dryer (I can't believe any landlords don't provide this automatically), etc. 

@Brian Orr First, brush up on GS 42-14.

(Whenever I’m working on a unit, I buy some dawn dishwashing soap to use to was my hands, and paint brushes, jist random needs, and I leave a nearly full bottle for the tenant, and after the cleaners come through they always walk away with it!!)

Your letter might get "accidentally" brushed into the garbage can in 10 seconds flat depending on the mood of the person who reads it.You'll catch more flies with honey than vinegar...I would be neutral, calm, and objective -- state the facts only and use "please" a lot.

Thoughtful touches were employed throughout inclusive of upgraded paneled doors on all rooms and closets, brushed nickel fixtures, and fresh white baseboard molding and casements.

Brush up on NJ tenant/landlord laws, hire an attorney and if you do it right you can have them out in 2-3 months. 

That is a VERY broad brush you just painted.

Even if you pay him $50/hour, your labor is only $1,440 plus $400 worth of quality paint and $100 for a paint stick, masking tape, and a couple decent cut in brushes.