My goal was to provide you with the best solution for the least work. I tried to minimize the hallway by putting the day zone closer to the entrance door and thus providing the best view for the living room. Master bedroom is separated and has its own bathroom and terrace. 2 new rooms are pozitioned in the old living area - they have solid amount of space and can use the other smaller bathroom. New bathroom is pozitioned by the kitchen so You can use the old door whole in the wall and kitchen ceilling for installation space.