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 !

Would you consider building a closet that would hold the platform on which your mattress would be placed? The outer side of the platform could have drawers or doors to the storage units under the platform. This kind of enclosure would work better for a twin bed than for a double, but it would provide a place where the bed can be concealed during the day time. Then, if you could allow a path between the bed enclosure and sofa, you could have the sofa face the dining table, or you could place the dining table at a right angle to the end of the sofa.

Guizz i m in a big dillema dat hw doo i decorate d corner dat is jst opposite to d main enterence of my home. . .its an 'L'shape corner wid 2.5 foot space on d window side n 2 foot on d right side. . .i need it too b quiet an eye catchy one as per indian styles. . .alsoo i wuld prefer a sitting space over hree 4 d ones we dun want 2 entertain in our living room n drawing room. . .alsoo i wuld lyk 2 mention dat dis wall is at 6 feet distance 4rm d door. . .plzz help me wid ur brilliant idear. . .wuld b really thankful

I think the nicest thing to do is to get a pedestal and put a statue or some piece of art on top of it, or just a vase with tall flowers, branches, or whatever you can afford to fill it with. If you want seating, then get a small scale chair put it in the corner, and place a framed picture above it on the wall.