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