The sofa is easy....
[https://oblist.com/products/342304-pair-of-san-romano-round-oak-sofa-barracuda-edition](https://oblist.com/products/342304-pair-of-san-romano-round-oak-sofa-barracuda-edition)
[https://michaeltoddblog.blogspot.com/2008/02/1960s-mid-century-semi-circular-sofa.html](https://michaeltoddblog.blogspot.com/2008/02/1960s-mid-century-semi-circular-sofa.html)
Curved bookcases are a thing.
For the bed I'd do a setup the same way you would putting the bed in a corner - put something fun behind it.
The Oblist! If you need help with furniture and decoration, I post curated items here: https://shopmy.us/casestudiesnyc
I can also help you more professionally, dm me if you’re interested!