Good about your stairwell area.
My huge gloriosa pot is nicely stashed in a dark corner, concrete floor, outer wall, of my studio. No heat in the studio, but it is connected to my house so it will get some winter heat. No windows in that corner and the winter heat might get up to 50 degrees in that particular area on some days. At least it won't freeze.
So maybe. It's the best I can do. I guess we'll know next spring.
