Something like this may work. Note the changed door positions so that anyone in the bedrooms can visit the bathroom without disturbing anyone else in the lounge !

I have to set up my New Living cum Dining room. Drawing is as attached. I do not have a sofa and I do not plan to buy any. Instead, I will prefer to buy some light weight chairs. I already have a 6 seater Dining table, a single bed and 3 old trunks of my MIL which I plan to put somewhere in this room and cover up with some padding above it and a good bed cover or Table cover. Please suggest me a good idea.

the attachment is no where to be found......Please try again...........

Let your wooden beam be as it is. put your Led lights in the other direction ( two on each side in one rectangle , so the total will be 16 units of say 10 watt each Led.), as to balance the horizontal and vertical shape. Don't put anything on the wooden beam to retain its the beauty.