Design a minimalist, well-organized room of 7x5 meters, that incorporates a children's play area, a couch with TV setup, a dining table, and a standing desk office area. The layout should optimize the use of space for practicality. The children's play area should be safely separated from the standing desk office area, the dining area should be conveniently accessible, and the TV area with the couch should be comfortably positioned. Utilize light colors and sleek lines to keep the overall aesthetic minimalistic.