A few pics and a plan of your space would help understand ur space better to suggest..

cool --but you can see the entire floor has been raised--do you have the ceiling height? a closet 'step up' would be less of a structural commitment, OR a buildup under builtin furniture--like bookcases flanking a fireplace, also some great ideas on HOUZZ i'd never have thought of. sorry i'm not tech-ie enough to paste the site:) of course if you go 'structural' --all walls and ceilings are fair game as well. remember that ease of access [or lack thereof] can affect stealth mode greatly--as in your pic: every time you step onto the 'box' in your pic you would hear a 'different' sound.

Check the layout . It is made to the scale so that every necessary requirements can be incorporated as per the dimensions .The only structural change mentioned here is the balcony door , which is shifted on the corner and rest of the wall is changed into a big window for the natural light which helps in additional sitting and if you want to develop some greens in the balcony the view from your living room will be just perfect. In the kitchen area there's a breakfast table with hanging display to bar the direct visibility from drawing hall . All the measurements are given to the scale.

Hello, the city is Gurgaon. I have not yet decided on budget exactly yet. I am exploring my options and will limit it soon. Consider it to be a low-cost approach, as a starter. I have attached the picture of measurements. Can you please elaborate what you mean by "layout"? Sorry, for this being a noob question!