Her room doesn't seem that out of the ordinary for Japanese people, but it doesn't look messy.
I think for those longer shows, they don't put a ton of detail into the scenery because the episodes come out pretty regularly. For the shorter ones like Kyoani makes, for a show with multiple seasons, they come out pretty sporadicly so season 1 will come out in 2006, and season 2 will come out in 2009. Now some come out a bit sooner like a year and a half later, but that's quicker than when the next season of Bleach comes out.
I think for those longer shows, they don't put a ton of detail into the scenery because the episodes come out pretty regularly. For the shorter ones like Kyoani makes, for a show with multiple seasons, they come out pretty sporadicly so season 1 will come out in 2006, and season 2 will come out in 2009. Now some come out a bit sooner like a year and a half later, but that's quicker than when the next season of Bleach comes out.