Finish floor, new paint or new kitchen: Best ROI for rental

[Gusatvus Johnson]

I have a large apartment in an old house that just became vacant. I have about $5k to spend updating it. With that budget, I can do any one of the following:

1) Refinish the hardwood floors. They are not desperately in need of being refinished, but they definitely look worn.

2) Update the kitchen by adding some new cabinets, replacing the appliances and doing a new (composite) countertop. Like the floors, the current kitchen is not in dire need of being replaced, but it is currently very basic. With $5k I could make it above-average.

3) Repaint throughout. The current paint job is in OK shape. If I repainted I'd be doing it to get the "wow" factor (and fresh-paint smell) of a completely repainted apartment, not because any walls are so bad currently that potential tenants would look at them and run.

I no there's no one-size-fits-all answer, but generally speaking, which of these upgrades would deliver the biggest bang for the buck?