I think a comfortable distance between the island and the counter is around 42". It seems that you have only 30" between your cook top and the counter. I might be a little too tight. The wall between the entrance and the kitchen could be 4' long instead of 6', you would then be able to move the island a foot which would give you more room between the cook top and the island. Could you switch the location of the toilet and vanity in your dad's bathroom so your enter facing a vanity instead of a toilet which is a lot nicer.

Leather sofas can really dominate the room and can give an overall cold feeling. I would add some earthy elements, like a wood coffee table with glass or metal. Go to Restoration Hardware's website and look at their sofa room scenes. And I'm sorry I think the art is too harsh for the room. That's all your eye goes to in the room. too overpowering. I would look for something softer or maybe a cool mirror and I would add color to the room with pillows and some colorful lamps. I also think woven blinds would look great. They add warmth and give a finished look. The color of your window treatments should contrast your wall color a bit, not match it or else it starts to look generic and blah.. You have warm walls, warm floors and the woven blinds, like Hunter Douglas brand would pull it all together for you.

haha you have a great problem! refer to the attached sketch plan,roughly 12'x6'10" will be your kitchen and utility you can accommodate a fridge, a washing machine, sink for washing utensils. keep it combined kitchen + utility. for guest bedroom, bathroom will be 4'x6'10" exactly, comfortable and as per standards. and my suggestion would be keep the living as living as by going the changes to kichen area you will get a wall where you can mount a TV . and placing a small dining table will serve as breakfast table, and also use your dining room as a study our your own personal leisure space. and about the costing part, there will be a lot of civil work involved , demolition, water proofing of new bathroom, plumbing for bathroom, new accessories new tiles. consider a range amount of 10 lakhs to 20 lakhs depending upon finish, chosen contractor rates and specifications. these are very rough figures.

that is what i have added if you can see the pic above.. want some suggestions on partition that i can use between dining and sitting