Yes, I know. Small spaces are so hard sometimes. But look at Taiwan, or Thailand, they have small spaces and definitely make it fit! It seems like you like to change things around often. I change my room around too. For organization, I suggest get a small desk and stick some shelves over the desk only. Youll have alot more creative room on the floor that way. Have a rolling side table. 2 floor liners and/or rug throws to place wherever. Comfy pillows to lounge on the floor. Go to Anna's linens or the nearest discount fabric store and get some cool fabrics to use as window shades. You can change the fabric depending on the season or if you get sick of the color. You would be amazed the difference in how your room looks depending upon the color the curtain creates when light shines in the room. For the bed, Get two throws, have fun with the design, get something you like regardless if you think it will match or not. Lastly, you can put the extra throws, pillows, blankets in bins under you bed. Cheers!

Now for Mr 16 months... I really can't decide. His room is going to be on the cold side of the house, with not so much sun so I want it to get that cozy sort of feeling when you come into it. I was thinking yellow or orange curtains? But then I don't know what colour to do the walls. These are some fabrics I like:

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.

Thanks for that AJ Interiors. Yes we have painted chimney breast (white- same as walls) We have a bought a huge dark grey mirror (metal) which has a slightly industrial feel but also in a traditional French style shape (I'm not describing this very well!) the two combinations will hopefully work well in a tradition villa, giving it a modern look. But we really need an injection of colour to lift everything. Am looking for some copper/metallic bedside lights. Quite like this copper lamp from Citta . https://www.cittadesign.com/home/living-room/lamps-light-shades/guarida-table-lamp-wmetal-shade-IIE0005