Like you want, I placed 7 desks in big open space,and all workers can do they job comfortable. Toilet size is reduced.Archive is now near the toilet.
And archive is replaced with `One man office`,he have one glass wall,which gives office daylight,and connect it with open space office.
You said that you don`t want boring space,so I played with black and white stairs,and with tiles on the wall in the back of the office and in the toilet. I hope you like this. :)