I agree with divadeva. More lights. If you can add pot lights do it. If they're already there add task lighting and up the wattage on the bulbs on the pot lights (replace with LED and you can make them brighter because the wattage on LED is lower for brighter light). If you have all of that add decorative lighting. If ventilation is an issue find a way to move the air around or add air filtration. Maybe the HVAC is deficient. Maybe you can add a HEPA filter instead of the standard one that comes with the unit. Call an HVAC specialist to see if there is a way to boost air flow in the room.

Yes, moving the bed under the picture wall would be good, and provide space for a chair and ottoman as you mentioned. And i have actually put a new set to curtains today which is a slight brown colored one. And I was thinking about painting the walls with the picture and the one with cupboards in a dark red shade and the adjacent walls something between off white to cream color. I plan to change the floor tiling too, but not at the moment. I've been thinking of making it a wooden flooring. But not sure what color to use.

hi Mamta, you have done quite some work already. My suggestion would be that you add a few wall brackets to add more green the balcony. not the Vertical wall-features but the wrought iron brackets which can hold clay pots.

What is the dimension of your bathroom? Looks like 4 feet wide, can't make out on length though. Glass partition or tiles partition for shower would help to keep your bathroom clean and dry and revamp look drastically. Wall hung WC is must, again from cleaning and look perspective. If window is not providing any light ( though your photo suggests some light coming from window) this area can also be used for multipurpose. You are welcome for more queries. Tiles selection can be decided based on a theme as well.