I think this was designed for a pre-teen/teenager, but there's a lot I like for a guest bedroom/home office. Love the built in desk and storage and love the blue, white, bright green color palate. The ceiling fixture is especially cool.
Bedroom: Wall of built-in cabinets for storage with space for tv, rather than a normal closet. Cynthias Designer Inspired Romantic Home (although I have to say this is not enough storage space for new probably)
A Guest Bedroom Goes From Catchall to Orderly Retreat