You might let them know that you are planning on making some capital investments in the property ("You get a fridge, and YOU get a fridge, everybody gets a fridge"), and that those improvements and your great service will continue indefinitely, but those types of improvements cost money.

-if sharing food in the fridge/kitchen is a problem, put a mini fridge in their room and tell the to keep their stuff in there.

I would put a mini fridge in the bedroom.

They left the unit in very bad shape (holes in walls, cigarette smoke smell, soiling and damage from unauthorized pets, graffiti and intentional damage, unflushed turd and vomit in the toilet, drug paraphernalia and liquor bottles, disgusting furniture and trash left behind, fridge, dishwasher and oven looked like crime scenes, cockroaches in the cabinets, grease down the drain, literally the works).

His really nice stainless steel fridge apparently had quit working at some point before we bought the house - he unplugged it and left all the food in it and just left it sitting in the kitchen!

I was showing an apartment and as we are filling out the Application with the new tenant she was looking around the kitchen and noticed right by the fridge there was a small mouse and she jumped back and painted to it making a fuss over this little tit mouse .

I have done a new fridge, Nest thermostat, Ring doorbells, microwave, etc.  

Not only did i provide the normal pics of damage, but I photographed behind the fridge, behind the jumbo outlet plates and showed the Army liaison the actual blinds vs new blinds.

I do a welcome gift basket in my entry level apartments and we leave a roll of tp in each bathroom, paper towels in the kitchen, and bottled water in the fridge at every turnover.

For example: I would post "new fridge" or "freshly painted"  but I would not post "8 year old carpet".For example: I list a 3 bedroom for long term working professionals or families at $2200 even though nearby area can get up to 2500 a month for college kids.For example: You want $2K for F, L, and Sec Dep = $6K.....is that standard for your area?