Showing layout for similar shape footprint. I'd run kitchen & bathroom along the side wall with rooflights, have false wall to the bedroom area, not full height & have a large open plan living space with access to the garden at side. I'd turn bed around so it's facing the double doors at the end with headboard against false wall. Access to shower room from the bedroom area only with no internal doors. A walk in closet could double as a bathroom entrance.
Layout could be similar if you put the bathroom alongside the kitchen & tagged the bedroom onto the end of the living area. Have a false wall for privacy in the bedroom but not full height so you get borrowed light thru' from the bedroom into the living space. (ignore the patio section)
Small stylish kitchen, painted units, butler sink, light tiles, open shelves, white china. Lot's of light colours to maximise the light & airy feel. Make kitchen area open plan so that the living space is one big area