A houzz contributor, not too long ago, had made a wine rack out of 4'x4' wooden pallets, that are used in the US to move a load of goods with a fork-lift truck. Perhaps they have them in your country. He cut them in half so they were only two feet deep and stacked them up to high counter height. The wood would be a nice contrast with your concrete, might add a little warmth to the space. cascio.offsite@gmail.com

Do you want the same design both sides? It all depends on the way the door will open as usually a door requires either a flat border or an L shape to close? Do you want the hinges visible or invisible. etc etcThese details are important. I would talk to a carpenter or woodsman first.https://www.houzz.com/magazine/know-your-house-interior-door-parts-and-styles-stsetivw-vs~13812351

Lavanya, Which car should I buy :D .. Without knowing your personality type and preferences a random suggestions for your interiors would not be adding much value and may even confuse you. Best way is to look around , see what you like, keep a note of it , plan your budget and then seek professional help/advice. Hope it makes sense. Thanks, Nitin Cornerstone Designs Bangalore

I feel partitions are not needed. You already have too much for the space. Adding a partition will shrink the space further. The simplistic solution, you do not wish to discard any furniture would be to paint all the walls in lighter pastles. And use some wall painting frames to highlight certain walls.