Their home is a very ordinary place, and this is important because it reflects on the ordinariness of the narrator and gives further meaning to the extraordinary experience of drawing the cathedral with the blind man, and the difference between the holiness of the cathedral and his home. By the end of the story, significantly, "setting" no longer matters at all. It is not important what the narrator sees or where he is but what he feels and imagines: "My eyes were still closed. I was in my house. I knew that. But I didn't feel like I was inside anything." His emotional capacity expands, transcending the limitations of any physical space.
It takes place in the home of the narrator and his wife. They are a married couple who aren't happy with their lives until Rober arrives. Robert, the blind man, is coming to see the couple, and the narrator isn't too happy about it at the beginning. The epiphany he experiences, however, changes him.