The NYT goes In search of Flannery O'Connor in Milledgeville, GA:

This is where O’Connor wrote, for three hours every day. Her bed had a faded blue-and-white coverlet. The blue drapes, in a 1950’s pattern, were dingy, and the paint was flaking off the walls. There was a portable typewriter, a hi-fi with classical LPs, a few bookcases. Leaning against an armoire were the aluminum crutches that O’Connor used, with her rashy swollen legs and crumbling bones, to get from bedroom to kitchen to porch.

Three hours a day. That sounds about perfect.