Small Bungalow Floor Plan - Optimization Potential?

I really like it too!

Would it be worth it for you if I redesigned the last one in landscape, so the kitchen and living area are more or less separated, as in the last one?

yes, very gladly, I would be very happy! I also crafted one and tried to incorporate some of yours.

Hehe, I'll draw in a few corrections for you

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Actually, the corrections explain themselves.
The front door should of course face the hallway and not the wall. Move the door of the utility room so that there is storage space behind it. This way you ultimately have more space than with a wrongly positioned door.
The hallway door also swings into the room and not the other way around. Plan the awkward corner into the utility room and not into the main living area.
Move the bedroom door away from the corner. If the closet disappears behind the door leaf, you have a better entry and thus a better feeling for the room, instead of running into the closet.
The bed could become tight on the side. My bed here was always 165 cm wide.
I would rather place the window in the west instead of the north and then rotate the bed. Then you are freer with two windows in the north. The utility room could also get a window in the east.
Windows need to be reconsidered anyway. Because above the bathtub is also bad for ventilation and/or cleaning. Windows give a house its style!
Pay attention to the kitchen: I have always planned 3 tall cabinets for enough storage space or the desire for a side-by-side fridge.
Currently, only one tall cabinet is drawn in here.
The terrace will probably need a pillar.

super - thank you! My thoughts regarding the opening of the front door and the door to the all-purpose room: I had positioned them so that the door leaf could be opened more than 90 degrees. But that probably isn't very practical. I had positioned the door to the bedroom so that during the move, the long wardrobe parts could be brought in more easily without hitting the corner of the bathroom. But here too, you are of course right about bumping into the wardrobe. This way is definitely nicer. My bed is only 140 cm wide, so it should fit with the measurements on the right and left. I had placed the bed so that there is a wall opposite (in case I ever want a TV in the bedroom and don’t really want to look at a wardrobe). And yes, windows are a topic in themselves... The kitchen with the dining area is still undecided how I will best design it. Tall cabinets are great, let's see how/if I can fit them in.

The terrace will probably need a pillar.

Yes, I had forgotten to draw that in.

With the bungalow, you can also move furniture pieces in and out through the windows during the move.

My thoughts regarding the opening of the front door and the door to the all-purpose room: I had positioned them that way because the door leaf can then be opened more than 90 degrees.

I would also adjust the doors, just because of the cabinet transport alone I wouldn’t want to build it differently and then always have to watch out. I would probably also consider not installing any door at all from the hallway to the all-purpose room, that’s how we have it here. Rather, I might put up a half-height wall with a wooden top or even a half-height, beautiful shelf usable from both sides as a room divider instead of the wall to the all-purpose room; not least also because otherwise it would be dark there.