What is opposite your desk? I think that's the only wall we haven't seen. it must be the one below in the ceiling fan photo. With the style of your windows and color of the trim, I think I'd do the walls with a specialty treatment to get the Old World plaster warmth going. You may find a wallpaper that replicates that look, if you like the look an prefer paper. The photos would tell me to turn the desk to float, centered on the window so you can look out. Your chair would face the window with your back to the bookcases, although I might move those to the wall we haven't seen. You have one full bookcase and one mostly empty. Bring in some decor items and style them with 1/3 books, 1/3 decor and 1/3 open space.

you can go for suspended lights from ceiling in slant direction below staircase with tv module below it. the light module will be triangle in shape in elevation which will create straight profile for the unit. re Regards, ANSHUL AGRAWAL studio aakriti

You're Welcome Mr. Patel :) Yes there are some plants that are better suited to indoor environment here's a guide for the same: but no plant can survive indoors indefinitely. you will need to to keep rotating them weekly or every 2 weeks. are you partial towards glass then sure it can be used. maybe paneled glass partition or a stained one like you mentioned earlier like these: The room does seem a little cluttered, which maybe because of the many different styles and no of things too. I think that can be helped by lightening the space a little and maybe bringing in a bit similarity specially the side tables and coffee tables . i have suggested the sofa upholstery color in the previous comment. shades of sage in velvet. if not then light beige in linen is also a good option. Something like in this picture https://www.houzz.in/photos/architectural-digest-india-march-april-2016-farm-house-in-delhi-phvw-vp~70030021 https://www.houzz.in/photos/vila-by-the-sea-phvw-vp~55949655 https://www.houzz.in/photos/aptes-bona-fide-expressions-phvw-vp~112062304 https://www.houzz.in/photos/sex-and-the-city-phvw-vp~94528292 https://www.houzz.in/photos/brentwood-transitional-home-phvw-vp~99412992 some bright colored cushions and an accent piece of sofa or some bright table cloth might also be good. as for curtains that will depend on the sofa upholstery you use. If you keep the same upholstery i think a nice pastel color would look better. something light. you should also choose light cushions and carpet for these sofas. and if you keep the same sofas i think you should atleast change some of the tables. I would also suggest bringing in a little more light to the room if possible. I hope this helped you. :) Best of Luck, Purva Saksena

SP if the slope is 3 inches from one side to the other then you are right you will loose close to 4-5 inches just to cover the gap and then any design will take further space. Ceiling doesn't seem high enough so you can have a max of level ceiling and a 1.5 ft perimeter border. Thanks, Nitin Cornerstone Designs, Bangalore.