(e.g. nice fridge, but no water/ice dispenser) Try to get the same equipment (not necessarily brand) for all of your rentals, helps on costs with replacements, parts and maintenance info.  

Before I came back, she already had the nasty fridge out to the corner and a new fridge in its place.

For the triplex, we have a slip of paper on the fridge where I record when each of our triplex tenants pays rent. 

Update on this story, since everyone loves a "train wreck" (that's getting back on track).This is what was behind the fridge/stove:If you're wondering what that white thing is on the wall, it's a diaper stuck to the wall!

There is no mold on the walls, ceilings, bathroom, carpeting, tile floor, behind fridge, stove, under sinks.

There are occasionally units without the w/d but most do provide a fridge. 

She left clothes and pans in her unit but all furniture is gone, fridge is empty.

He could fit a full sized fridge in the back of one, and full sheets of plywood or sheet rock on the roof rack.  

I had to roll the fridge outside.

Before I returned from evacuating, my LL had already dragged out the (now) nasty fridge and replaced it with a new one.My worst experience was an apartment complex I lived in.