kotatsu; table over an electric heater, with a hanging quilt to retain heat (orig. over a charcoal brazier in a floor well)
kotatsu; table over an electric heater, with a hanging quilt to retain heat (orig. over a charcoal brazier in a floor well)
sunken kotatsu; low table over a hole in the floor (may have a heat source underneath and a hanging quilt to retain warmth)