Severus stands, watching this display with knit brows, and then in a truly Gordian Knot fashion, twitches one hand and murmurs an incantation. In the blink of an eye, the room is immaculate - completely free of dirt, grime, dust, rust, cobwebs.

And then something in the foundation groans, and it snaps back to being filthy.

"..Damn."

There's something in this tower that makes him feel like he's shouting underwater when he tries to cast anything. He's not particularly surprised it didn't work, even if he doesn't feel very secure knowing his magic isn't working properly. A bit closer, he attempts finite incantatem on Odessa herself.