Possibly replace cot with large built in reading nook. This would provide storage on sides and give the privacy curtain somewhere to be when open. Bring sofa area out in front of tv area. Then being the dining area where the sofa is open part of dining wall if needed. This will give you enough space to extend the kitchen to door and still have mud room of sorts where dining room currently is. Upstairs looks ok consider looking at ship bathroom design. It is far more efficient than conventional. You must still follow local codes though.

"Good", "durable", "all time fashionable" = solid hardwood. of course, you didn't mention anything more than that. So we have to offer what we have. Hardwood out lasts tile by 50 years. Tile is the next 'toughest'. Of course "stone" will outlast everything...but you don't mention what you want it for.

Many thanks for your valuable comments. 1. My intention of raised cabinets was to clean it daily, as cabinets that touch floor accumulate lot of dust and food particles below. If we rule out steel legs, any inputs on raised floor only of cabinet area and then cabinets?(Just like plinth in modular cabinets- but this will be permanent and of tiles) I have not seen such structure anywhere, so curious if it will work. Otherwise I will go with traditional ones. 2. Moving pooja out of kitchen is very difficult as other rooms are just enough for their function. Currently a small Mandir is attached on wall where Fridge is shown in layout. I thought the new area could be little extra for all pooja related things. Will like to know the reason of your recommendation, is it odd in whole design, or not suitable in area .. or anything else? How about moving it to corner of dining area?

Hello , Since you have a beige marble flooring, you can opt for a colour scheme that adds a pop of colour to your space. For example, the green and grey colour scheme or the green and taupe colour scheme will look good on a beige flooring, there is also the neutral earth tone colour scheme which has the combination of wine and taupe colour and lastly there is the earth tone colour scheme which consist of golden wheat/ burnt orange colour, These would add a pop of colour to your space and make it look chic