Given the size of the room, I would recommend having one large zone, with the main sofa along the right wall, and TV above the fireplace.

I would replace single picture with 2 to 3 pictures that are vertical possibly over the headboard. Depending on the size, display them across your headboard so that they span further than the current picture, say across the headboard but inside the shelves. In addition you might want to consider some sort of lighting that you can attach to the headboard that you can direct down rather than thinking of table lamps. I think the shelving can work, but for me would be collectors of things and never looked very nice. If you're different than me maybe you could start with something low on that top shelf with just some small things on the other ones. Good luck

"I thought maybe a wall in front of the wardrobe at the bottom creating a walk around wardrobe, but I think then the bed would jut out into the entry space, not sure if this would be an issue other than for looks?" You don't really have the width to do this... being that you want atleast 3m for the bed to sit against imo (3m if bed & bedside tables). leaving only 600 which isn't enough to get around into the robe. Knowing the size of the windows may help with a solution (i.e. if w06 a high window could bed go under?). Also, the room being only 4390 overall means that between the robe & 1200wide sliding door you only have 2.5m approx. As above, move the bedroom entry door to the other side of the ens. and move the ens. door into the hall, but you may still be tight for room. You could move the robe to against the ens. to end with a 3x4.3 approx. room?? Just another option for you to consider.

Which way are the panels vertical or horizontal? What shape is the toilet room, are the occupants tucked around a corner or straight in front of the door. Is the door at a noticeable thoroughfare of the hallway? Even if glass is frosted, when the light is turned on the people in front of the light may make a shadow on the door. But it depends on the size of the glass and shape of room.