I have read through the comments posted and I'm very amazed at how productive your followers are. Always looking for compromise, would it be possible to to face the two- seater couch toward the three-seater? I know it puts the two-seater back to the kitchen area but it would pull in the living area to one room. The sunroom behind seems to scream do something with me ( if only to make it a kids playroom). One or two chairs of smaller scale might be added to the open end of the couches. Or a low, wide bookcase that would feel like a faux divider and would add storage. Back to back bookcases would add heft and double the storage.

Lots of lovely inexpensive rugs on overstock.com and they ship to Australia. I have used them twice and rugs arrived in a week.

What about this one? http://berkowitz.com.au/product/tina-sofa-bed/ We bought the armless version for our small study: http://berkowitz.com.au/product/dora-sofa-bed/

The room looks lovely. The rug is too light in fabric weight - it could be dangerous if someone caught their toe under it. And as mentioned by others - you need some colour. I know that it is advised by some people that a mat should go under the furniture, however, that is not always possible.