Favorite room in the house to design or decorate?

I love trying to think of what a particular sim (or general type of sim) would want and need in their room. It's so fun to create a story with the decorations and really think of why the sim might choose to have that object. I recently did a bear-themed toddler room and I had a blast coordinating the colours and arranging some teddies into an adorable bear family (no pics yet, sorry).
Here's an example of a bedroom I imagined would belong to a quirky, yet mature photographer: