Room that will grow with child

[Happinessisabook]

My daughter is 4.5, and we will be moving her from the smallest to the middle room between Xmas and Easter as she is outgrowing her toddler bed.
I want to decorate the room in a way which is good for a small girl, but that we can edit easily as she grows so we don't need to fully decorate often.
I've attached a floor plan of the room as it currently is, there is a single bed, a large wardrobe and a bookshelf which will all have to stay in there. I'm thinking of moving the wardrobe to the wall opposite the bed, but I'm not sure yet. It's extremely heavy so can't really be moving it around a lot deciding where it looks best. It definitely doesn't make sense where it is though, as there's about a foot of room between it and the wall.

Also decoration, has anyone got any suggestions of what might work for a child from 4.5 to maybe 8ish? Or something easily changeable without fully decorating every time?

Plain walls, say yellow if she likes that, and curtains in another plain colour.

Go for her choice of rug, bedding and artwork as those are easily changed.

I'd move the wardrobe to be parallel with the bed so if you are walking into the room it would be facing you jammed into the right hand side corner.

I hope that makes sense.

Have you ever used the wall decal things you can buy? Are they easy to remove without leaving a mark?
Thinking they might be a good option for a pattern which can be easily changed.

When I was a child, we did this - I picked a colour and we changed up the decor to make it feel "new".
I've not used decals myself, so couldn't recommend a brand, but in the house we bought there were lots of decals in the nursery and they came off without leaving a mark :)

Like this with the gap between the wardrobe and bookcase?
Everything is to scale btw if that makes any difference

Forgot to add the picture 🤦‍♀️

We did yellow and purple, and used removable stickers which we changed as they grew of of one thing and into another.

I'd paint in yellow or pale blue and have curtains and rug in a contrasting colour.

In terms of furniture, is there space to push the wardrobe all the way into the corner and then have the bookshelf on the wall between wardrobe and door? that would free up the corner by the window to have a bean bag and a toy box which would be nice.

I went through this thought process for Ds1’s room when he was about 4yo and we decided to make it look more like his room, than the previous owner’s teenage girl’s!

We painted the walls a mid blue, and I bought curtains with varying width stripes with shades of blue, cream, a red, a lime green and a beige - this one but the colours seem more muted in real life. I also paid half this price per metre (albeit ten years ago) from a local stockist

For the first few years, he had dino bedding alternated with vehicles, the duvet sets were from Dunelm and were brilliant quality

We had ikea white furniture

Then when he was about seven, we bought under the sea decals, and bedding with a pirate theme from John lewis

The decals stayed on longer than they should (laziness on my part!). He is now a teenager, and the curtains still work well. The mid blue walls are now a deeper blue, and he has some skiing and wildlife canvases which work well, and M&S stripe bedding.

I feel that it has worked really well over the 10 or so years.

Maybe you could go with a stripe too, with lots of colours? That way you have options for the future.

Just paint the walls a neutral or at least plain colour and add rugs, duvet set, cushions, curtains and framed prints to suit your daughter's interests. I wouldn't bother with stickers.