I think I would start with the furniture, in terms of space, given that you said it was not a large room. I would check sizing of the furniture and room, to see what would work with the bed, a couch, the wardrobe and any other furniture that you'll be using in the room. From there, I think I would start with the bedding possibly as a starting point for the color scheme. Perhaps you could find bedding with a print you like in the colors that you like, and take from there, the colors for the rest of the room. As well as a sofa bed, another option might be a daybed that could also do double duty as a bed or seating. I think painting the furniture a bring pink would work well against the white. And then take it from there with whatever you've decided to do in terms of the overall color scheme with pink/white/silver/black or pink/orange and white for the walls, perhaps something like a gray as well with the second color combo. Good luck!

I like your plan but I don't think a pattern on the bed wall is a good idea. The carpet already has a lot of pattern so I'd keep that wall a solid, dark color, from the rug. Add some sparkle like mercury lamps for the bedside tables for interest.

Okay, so I like it simple and modern, big stripes, big blocks, love this and this I really like uncluttered look. like this to https://www.houzz.com/photos/murphy-beds-modern-rendering-phvw-vp~24435627 , and I like my dark grey's and browns not to mention light blues, yellows, oranges and reds clashy aye.(not sure if these colors will work with the wood, really like the idea of staining the wood darker to more like this https://www.houzz.com/photos/rubin-residence-contemporary-bedroom-san-francisco-phvw-vp~5202610). But really interested in your ideas.

I meant to upload photos of the wallpaper and cushions.