In the layout below, I took the liberty to move to vanity and toilet so you don't enter right into the toilet. I am not sure if you have room for that since I can't see the measurements of the width of your bathroom. This is something you can discuss with your architect. The main idea of the layout below is to block the original entrance of the closet so you can have a bedroom door. The entrance to the closet/bathroom can be where your dresser is and move your dresser closer to the window. You would have a choice of a door that swings inward, outward or a pocket door. Personally, I would go with a pocket door so the bathroom would feel more spacious.

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.

Thank you Laura for your response 1. I would be buying new furnitures 2. The door that you see in image 1 is the main entrance to the house , opposite to that is the passage to the bedrooms 3. In the image 2 the opening you see next to the main entrance is the kitchen area 4. I do not have the exact dimensions with me right now but I can give it to you soon ..but as you correctly said it is kinda skinny and long 5. Also there is 2 feet space ahead of the window which if we want can be extend in to a window bay or a sit out sorts

Hello Sagar, This space is sufficient for a bathtub in a bath. Thanks, Nitin CORNERSTONE DESIGNS, Bangalore