Love the armless sofa-bench! Try using it in the center as a "cross-linking" piece between the sofa and chairs. That way people can sit on both sides of it, conversing with the sofa people and the chair people. Put the chairs where it is and use the side table from the left of the pic, or the one with flowers, between them. You'll need one huge rug to anchor the space or two smaller, and very similar ones, to put on either side of the blue sofa-bench. The other two side tables are too tall and too short for your seating pieces, so ditch them. Use your coffee table between the sofa and armless sofa (18" away from each of them.) Here's a chart for judging table and lamp heights as you'll need to work on that for balance. Please try this arrangement, and post by commenting and using the Attach Images button to add pix of the update. We'll tweak it on out from there.

As Mr Raghu has commented, designer pieces (in whatever category) are not for ergonomics or practicality for normal use. This one is a famous design by a group of professors at the Victoria University of Wellington, New Zealand to aid Autism. You will have to order a piece from New Zealand to be true to its purpose. Copying can be done by a skilled carpenter in India, no doubt, but would still be expensive and a fake. Expert from Inhabitat website: Cradle is a sustainable rocking chair created by a collaborative effort to aid people with autism and Rhythmic Movement Disorder (RMD). Developed within the Victoria University of Wellington, this cocoon-like seat is made from cold-bent plywood. Because rocking is one of the calming activities that is recommended for autistic folks, this special seat is a soothing and aesthetically pleasing addition to their homes.

two basic issues your room floor is dull is that floor to floor carpet if yes then add a a smaller area rug under your table to get splash of colour, alternatively if you dont want to do that then add some colorful wallpaper behind the sofa. Where you have the table lamp add something taller like a modern floor lamp or a tall spread out palm plant. Take the table lamp and add to a side table if you have one. The second biggest issue is that you have a lovely modern sectional sofa and then you have paired it with a very traditional and very high coffee table that looks like it has marble inlay work done (cant make out clearly). This is not a good pairing. The coffee table is the right size but get something modern and a lot lower, a general guide to this would be one inch to 2 inches lower than the seating height of the sofa. As someone else mentioned an Ottoman that can serve as a coffee table in an alternate colour will also work. Paintings and wall art is something you can experiment with but unless you do something about the coffee table the room will continue to look odd in my opinion. Also some more shots of the room will help us get perspective.

the pictures you see online of glass walls and roofs are those not from India. and the usually have a large property and the home itself is secluded enough to provide privacy. for heat, they have a centrally controlled HVAC system that is on 24x7 to regulate heat and cold, plus the glass is often reflective and double, to provide a modicum of insulation. since you're a resident of Hyderabad, it would be more advisable to have just a skylight or just large french doors and not got for the entire combination. hope this helps