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.

Keep it white its beautiful ,just add a few planters on top of the columns with red Geraniums and paint the front door black

i want to know the best floorings combination fir my house

A 27x88 ft plot offers enough space for a Kerala traditional house with a Nalukettu and a central open courtyard. The design can fit well within these dimensions though it depends on specific architectural requirements and space utilization. I recommend consulting with an architect familiar with traditional Kerala houses for a more detailed plan. Construction costs can vary based on materials and local labor rates so it’s best to get an estimate from local builders.