Somewhere along these lines (with a dark brown rug under the dining). What will your interior look like? (color, floor, etc)

Leather sofas can really dominate the room and can give an overall cold feeling. I would add some earthy elements, like a wood coffee table with glass or metal. Go to Restoration Hardware's website and look at their sofa room scenes. And I'm sorry I think the art is too harsh for the room. That's all your eye goes to in the room. too overpowering. I would look for something softer or maybe a cool mirror and I would add color to the room with pillows and some colorful lamps. I also think woven blinds would look great. They add warmth and give a finished look. The color of your window treatments should contrast your wall color a bit, not match it or else it starts to look generic and blah.. You have warm walls, warm floors and the woven blinds, like Hunter Douglas brand would pull it all together for you.

Check the layout . It is made to the scale so that every necessary requirements can be incorporated as per the dimensions .The only structural change mentioned here is the balcony door , which is shifted on the corner and rest of the wall is changed into a big window for the natural light which helps in additional sitting and if you want to develop some greens in the balcony the view from your living room will be just perfect. In the kitchen area there's a breakfast table with hanging display to bar the direct visibility from drawing hall . All the measurements are given to the scale.

Why not paint it in a pastel colour? Add a carved chest that doubles up as shoe rack and organiser to store your shoes below and hold keys and bills in top drawers. You could hang a painting or a statement mirror above the chest and highlight with wall sconces or beautiful table lamps to shine a soft light around it.