One possibility would be to swap the living room and the dining room. Since the current living room is larger than the current dining room you could still keep some comfortable seating (couch and upholstered chairs?) against the front wall for a keeping room/dining concept. Then your new dining areas (kitchen and dining room) and living areas (living and drawing room) would have good flow between them, which would work well both for family and entertaining. You could also add some builtin bookshelves in the drawing room or new living room to create a library area to add another fun element to the living areas. These bookshelves could be against the long walls in the drawing room, around the window with a window seat in the living room (former dining room), or built to create some separation in the open area between the drawing room and living room/stair area. Your plan seems to show some sort of builtin there, but I'm not sure what it is.

Thank you roj leather and Simon for your recommendations. I like the hanging chair and the almanda creeper on the wall. This will certainly liven up the patio.

I would consider putting cabinets on the short wall where the utility wall is. Have your stove there centered on the area. Move the sink so it is centered on the long wall where the cooktop is now. Put the fridge on the end run of cabinets closest to the dining table. That will give you an L shape kitchen with a nice work triangle. If you have your heart set on an island remove all the wall cabinets and install a large island. This is not the style of your kitchen but it does show the layout I described above. L shape cabinetry with stove on short end, sink in the middle with DW to right of sink with cabinet above it for dish storage and the refridgerator on the end run so it is out of work triangle and conveniet to the dining area for serving or work triangle for prep and cooking. Island can be any style you desire. L shape with island and open across from island; you might consider this layout if you desire an island. Something like this?

Referring to the sketch above as option 1 you can have two option, option 1, as obvious cutout at the middle of the u shape staircase, in addition to this you can also have a double height entrance foyer with a chandelier in between hanging from the top. on first floor you can shift the balcony door side ways as mentioned with a circle. referring to the image above option 2 option 2 would be a complete change of staircase orientation , bringing the staircase in front foyer, extending the upper cutout as marked in dotted line, the new found area can help you extend your both bathrooms areas or can help you put some ground floor furniture or a informal study area.(see if your FSI permits to all these changes). and on the top your new area can accommodate your big gym equipment's like treadmill , and some additional gym storage. here you can also get to know from top who has arrived to your front door peeking downwards. further the walls of this area can be decorated while doing interiors and make the foyer look grand & luxurious. option three, If you are thinking of giving a cutout in center of the hall, please avoid, your areas above wont be usable in an appropriate way. cheers