About the design, there are some points I felt I needed you to consider. Firstly, in order to guarantee the safety of the building, I kept the columns in the center and walls.
Secondly, the floor plan is divided into 2 units, as you requested. Each unit has all the needed amenities such as:
• Entrance with entry closet for shoes and coats.
• Bathroom with shower, toilet, bidet, single bathroom vanity.
• Bedroom with closet(more than enough space for clothes and also storage)
• Kitchen fully equipped with stove oven hood fridge sink
• Dining can be dually used for both preparation and dining
• Living room is created to insist on the open space plan.
For this project, the best way to optimize the space is to settle bathrooms and kitchens in the center to facilitate both bedroom and living room. Therefore, we can have an open space without cramping it with extra walls. And both units are equal in size.
Furthermore, for better comprehension of the plan, I created a 3d floor plan to give you the opportunity to understand the space and plan fully.