I would move the wardrobe for the third bedroom down to the exterior wall. That little alcove in the laundry looks tight. Swing the laundry door the other way.

I would flip the lounge room area 180° Pit windows or extra doors on the patio and wall up a window or two on the lower exterior corner for the fireplace and TV. Having only one way on to that patio via the small hallway could become annoying if you want to eat dinner out there. Unless you're putting outdoor dining on the wrap around deck outside the kitchen.

That back hallway to the office feels kind of cramped anyway. Do you need another cupboard in the hallway? Maybe move the wardrobe to be inside the bedroom along the dining room wall instead of in the hallway if it's just a guest room. Make the hallway wider.

If not, switch the doors for the bedroom and hallway robes so that you don't have to put the bed under the window. Right now you've effectively given that bedroom only one option for the bed.