I'd open it above like a 'pass-through' and bring the table out in front of it with a bench under the opening.

you can put bed on window side

1.Two seater sofa very close to main door which is uncomfortable while viewing 2.Dinning is Bigger than Living room 3.Dressing and toilet planning to rearranged 4.Staircase way from kitchen is appropriate in such good space.Many Design principles are not followed, Kindly contact for proper guidance.

Hi, we suggest to keep your home simple and warm and fresh and add a pop of colour in terms of either rugs or curtain or accessories. attaching some images for your reference option 1- you can create shelving options on simple white walls to decorate the space. option 2- you can add one feature wall of a bolder colour than the rest of the walls option 3- you can panel the sofa back wall with laminate/veneer to add warmth and keep furnishings and fabrics neutral option 4- you can keep everything very simple and neutral and add a pop of colour in rugs/curtain option 5- you can add wooden slats to give the house a modern contemporary look. Pro tip - adding planters will enhance the space and look it look lively and homely at the same time. best of luck! regards, deSigneR