The only furniture Rose needed to buy for this house was the bed (which could have been built by Schindler for all I know) and the piano. All the other furniture is built-in, mostly of plywood. (Figures 1 and 2). The furniture shapes the space and is part of the design.
The plywood wainscot in the living room runs from the fireplace, behind the couch and dining area, then takes a Schindler notch around the kitchen pass-through. It reminds me of the front elevation.