I like the little day bed and the window and beat board walls. day bed on plywood base with built in table. we would put the long edge further back for under the bed storage space. I also would want to paint it like white or something.
Vegetable boxes incorporated into small yard. Note the trellis at the back of each bed. This would be very pretty along the back and provide a place to attach vines and fruit branches - like the stone path around the garden