Hello again ;)
Where I come from it´s raining all day and I really wish the winter to end now. So to bring a little sunshine and happiness to my - and your - live, I decided to write an article about tropical room decor. Let yourself inspire and maybe you´ll be motivated to rearrange your room as soon as you´ve finished reading.

aesthetic Superthumb
what could be more tropical than plants - so there can´t be to many of ´em
bedroom Superthumb
and if you can´t keep any plant alive - just place a picture of ´em in your room
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add some tropical printed pillows or blankets to make your room way more cozy :)
apple beach
and what could reflect this tropical vibe more than some surf- or longboards
Superthumb bohemian
keep your room natural by placing wooden furniture
travel Superthumb
or make it look like a explosion of art - colorful and happy - matching the sunshine outside
bathroom bathroom
a cute palm tree print mixed with a one-colored wall: what could be more beautiful?
bed interior aesthetic balloons
and last but not least: add some warm lights to keep the sunshine in your room even after sunset

But keep your room simple. Don´t add to much decoration. Sometimes less is more.