A water and bleach solution  will kill the slime and a good power wash and it wont be as slippery 

Simple mold remediation is spraying the surface with bleach and then paint it with odor blocking primer after it dries.

I've tried soap and water baking soda and even bleach on one of the doors and nothing has worked so far.

It's an amazing job but you have to tell your tenants not to use bleach when cleaning afterwards.

We removed a rotted wood storage area and bleached/scrubbed the entire wall and sealed it.

Also try bleach.

Treat anything that can not be removed with bleach solution and paint with Anti fungal paint.

I do use Peroxide on paper towels with plastic over it to bleach out some of the staining.

Bleach only removes color and odor wont kill root structure. 

I’ve had so many plumbing leaks like this over the years, I’ve found it saves a ton of money to just deal with it myself: fix leak, pull everything out, use an air handler, big old dehumidifier, fans to dry it all out, wipe off the mold, spray some bleach, replace drywall, put it all back together and I can usually get it done relatively quickly for a couple grand and move on without having to mess with getting completely gouged by sketchy restoration companies or insurance (who just raise your rates or drop you).