Mold problem? What Mold Problem?

So, remember when a year ago I wrote that there was a leak in the wall (coming from my bathroom) that was soaking through the concrete, and despite my repeated attempts at getting it fixed, nothing was done?

And then remember when a few weeks ago, they came and fixed it (because a dean complained about it) and while the plumbing to repair it was less-than-professional, it still fixed the problem (and saved the structural integrity of the building)?

But they didn’t clean the wall, and the oozy, gooey mold was still all over the wall outside. Well, no longer! Someone actually came in and repainted the hallway. Not just my hallways, but the entire stairwell hallway from the first to sixth floor. Amazing! And he actually did a decent job. It took several days, and he did constant sanding to take the old layer off, and the new layer was painted pretty smoothy. (Which was another bit of professionalism I didn’t expect. In the apartments, between tenants, they just add a new layer of paint without removing the lower layers, so when a piece flakes off you can see all the layers of paint underneath like rings on a tree.)
The painter, an obvious chain smoker, left a trail of cigarette butts in his wake. One on almost every step, and a few on the landings.
Now I no longer have the “my apartment is the one after the slime wall” convenience (and it has actually confused one friend who couldn’t remember where I lived without it) but it’s clean and shiny and new. The next person will just have some wonky plumbing to wonder about, but no clues to tell them what happened.