Can you post photos of the space and furnishings?

The only wall I would possibly treat differently is Wall B because it's large and there aren't any windows or doors on it. It could have a fairly bold colour on it and the rest of the walls could be much lighter, even a white. That will draw all the emphasis in the space onto Wall B which is probably where you will anchor your sofa arrangement.

I think the L shape sofa will look good, with the corner of L placed where you have the Ganesha Idol. you can also place a bench on the opposite side with some colorful cushions on it. It will give you a contrast look and a antique touch to the hall. You can place the Idol elsewhere in the hall, may be just opposite the door ttowards the call. so that whoever enters from that door feels nice/good. I have selected light colors for your hall because your hall has dark color wood work and its making the hall dark. Light color makes your room more bright as you have lot of sunshine coming from the door and windows . I hope this helps. https://www.bing.com/images/search?view=detailV2&ccid=4P6z03v6&id=A25E4EEE0B66770D19E09A1F431B9BA642F3D345&thid=OIP.4P6z03v6cAWvmAYfClS2WAEsCc&q=l+shaped+sofas+designs&simid=608018563129935084&selectedIndex=107

Not completely......the side sofa can extend till the centre of two doors and then the lower table comes, still allowing a generous space of one side sliding door opening to outwards....the doors can slide anyways which is majorly for viewing purpose and do you really need that large excess to opening...i was just curious....the glass door looks like 5 feet so you will be left with 3 feet of opening that is equal to any generous door size.....is there any major use of balcony except for vegetation and small gatherings which could still happen with the 3 feet opening........