Lol kinda basic older apartment building made of stone, I think you might be American, lol.
Those stairs aren't even that thick, tbh.
I do get the vibe you're talking about, but honestly the stone buildings in my city have wider and more elaborate staircases even when they never had any sort od business in the building. I'd love an apartment in one of those, if they weren't solely in the center of the city, because the thick stone walls in them make it so you can hardly hear anything your neighbour is doing. Also the ceilings are tall af.