we can't see the detail of the plan and wonder if you're asking about alternate ideas for the floor plan or suggestions for colours. furnishing and materials for decoration?

a hand drawn plan with dimensions and location of doors, windows and stairs will help understand the spaces better

here's a couple of pictures from houzz.
Ultimately depends on your personal likes, how brave you want to be :) and your budget.
Hope this helps

You could hire a designer. There are lots who are local to you on this platform. They will give a whole scheme and assist with builders and other service providers. You wont know yourself afterwards.

would love to see the ground floor with a rustic looking timber floating floor and simple white kitchen cabinetry, white bathroom tiles and appliances with timber stairs and doors and keep colours for soft furnishings but suggest that a simple rearrangement of the downstairs bedroom entry will create better traffic patterns and more space under the stairs for bedroom, kitchen dining and laundry storage, more privacy for the bedroom and more direct access to the bathroom from the bedroom