My PM is scheduling a professional photographer and the unit is clean and in decent shape.

as a disclaimer, I worked for many years as a commercial photographer before getting into real estate. 

For a few hundred dollars, you can hire a photographer and it makes a WORLD of difference in your marketing. 

(I feel as though she had to break the window to unlock the apartment to show it)-I've met her 3 times and each time she's driven to the apartment.

Hire a PROFESSIONAL photographer - $150 to $200They are the specialist here, let them show what the house looks like in images.Stage the house - Tell a story to those walking into the house how their lives could look like living in the house. 

I'm a photographer, so I could offer free photos for their listings.

Just document agreement carefully and photograph condition of home well.Set the sales price at something giving you a decent but fair profit on the home.They can pull the trigger and buy the home anytime by paying you the balance owed or financing the difference.This is a win-win-win.

Unless you or your agent are professional photographers, don't do the photos yourself.

and what do you personally look for when unlocking hidden value?

Heck, I don't even need a real estate agent to unlock a bank foreclosure house that is for sale.