Without seeing it nor the colour on your walls (which also plays a part), I would say you could take any one of the colours from your carpet as your colour for the upholstery. Yes you can choose two complementary colours for your upholstery but make sure they work tonally. (To do this take a picture of the colours and render them black and white; the colours for your upholstery - even if they are different - should have the same level of grey in the b&w photo).

Probably the same material as the kitchen and rest of the main floor.

first of all, Thank you guys for those valuable inputs. yes, as far as cleaning goes, its just been finished installing and I have asked them to clean them up. And also, I observed that the frosting on the glass didn't look that good, so I am going for the filming on certain portions of the doors n windows. - Is there a particular quality of films that I may choose for this ? - Yes, lighting is definitely the criteria I had in mind which can bring up the finish to this. And i am worried about this , as I did not go for False Roofing, bcos the ceiling is already at a low height. I should really refine my ideas on the lighting part. - the stairs are floored with white Marble stone..My mom loves it and the matting on it might hinder its beauty, but yes I will surely consider that as well. Thank you again.

Hi Ria Kindly go through this diagram for zoning of spaces and arrangement of furniture for your living and dining area. Your block dimensions dosen't match the scale of the plan but I have still provided with the best possible arrangement :) Hope this helps :) Do get back if you have any doubt :) Thanks & Regards Aditi Morayya Space Design