Your house may have been built in the 20th c but I don't think you have a mid-century modern house. You have a cottage, with brick porch supports and otherwise stone veneer pasted onto it. A bay window pasted on later.
Were it my house I would rip out the concrete on the ground in front of the house and on the right side of the house create a trellis-folly to support growing vines up the stone and all around the bay window, 5/6ths of the way to the roofline. I might even go so far as to use trellises that had a large circle or square or open arch in the center that framed the window -- like this except right at the house, perhaps creating an oval opening closed at the bottom, not a door-like arch.
If the brick has never been painted I would leave it alone. If it is already painted, I think I would repaint it in a color like raisin or ink or maybe pink and put a flowers-and-stones-and-brick garden in front of it. I would make the porch interior a useful and enjoyable place to sit, including screening it against bugs if necessary, and well-lit. If I screened the porch, I'd consider a design for the screen supports that inverted the peak of the roofline to a V.
Then I'd think about what color to paint the door.
Don't know if that's '''modern'' but it would be what I wanted to look at.
Q
