Laura: thanks! I like the idea of white/ nuetral bedding. would a grey comforter work? Also good idea to replace the gallery wall idea with a big piece of art.

A bookshelf with colorful accessories, colorful bedding and colorful art. Add a floor lamp or small lamps to the bookshelf for added light. You could also use command hooks, add a light weight curtain rod and colorful sheers to the window. Be sure they drape to the side of each window as your light is valuable!

You could use a floor mirror on that bare wall. TJMaxx Home Store has floor sized mirror for $50-120.

No command hooks are going to hold any books and this is also a duplicate post.

I wouldn't use a floor mirror in a tiny bedroom - I'd trip over it for sure!

I wonder why the OP wants to decorate the inside of a tiny rental bedroom. I rented a room when I was in college. I slept in the rental bedroom, studied at the library, and ate at local places.

Heather, explore your world, do not spruce up your cave

A girl needs a big mirror. Don't you guys get it? :-) Fashion lives in any size apartments, a mirror is a must, a big one is really needed, so she could see the whole outfit from head to toe. Guys just don't get it......lol

There are mirrors about 18" x4' intended to be attached to a bedroom or bathroom door -- by the window it could reflect that natural light.

Would add white vinyl miniblinds to the window to visually minimize the limited nature of the "view".

Consider adding stained glass decorations to the window itself, collecting a few smaller items you particularly like -- I've found a few relatively inexpensive Tiffany style ones at antique&more stores and thrift stores.

https://www.delphiglass.com/pre-cut-kits/home-decor-votive-kits/pre-cut-birds-trio-kit

that can be attached to the window with suction cups.

https://www.etsy.com/se-en/listing/268266558/stained-glass-suction-cups-10-with-metal

Add at least a curtain if not a door to what appears to be an open closet opposite the door by the window.

Add tall, shallow cabinet with doors as wide as will fit in the indent to the left of what appears to be an open closet.

[https://www.houzz.com/products/storage-cabinet-prvw-vr~100627544?m_refid=PLA_HZ_100627544_954742044[(https://www.houzz.com/products/storage-cabinet-prvw-vr~100627544?m_refid=PLA_HZ_100627544_954742044&device=c&nw=g&gclid=EAIaIQobChMI-YCYooPG3QIVCcDICh0a-wdCEAQYASABEgLrk_D_BwE)

See if you can find a bookcase headboard or lights that either clip to whatever headboard you have or hang on the wall rather than take up space with bedside tables.

Choose bedding with a light background and at least a couple of your favorite pastal colors, with pillow shams to match. Lighter colored bedding will visually make the room seem larger than darker colors.

Do iron the bag with the cherries.

If you don't use the bag with the cherries as a bag, you might cut out and frame the one side of it with the cherries. If you use the bag as a bag, invest in a hook to hang it at a convenient location -- perhaps a magnetic hook attached to the refrigerator. Alternately, since December is approaching, you might find a hook intended to hold a holiday stocking on a mantel that would let you hang the bag from a windowsill with it -- something that could be used year round ... perhaps only a heavy metal star.

thanks all! you're right, I don't want to spend a ton of energy decorating the bedroom, I might look for some nice big pieces of art and maybe a cheap bookshelf. I just don't want to feel like I'm living in a mental institution with the white walls! my living room/kitchen are both gorgeous so I spend most of my time there

You could diy. I am going to try this one:

https://www.youtube.com/watch?v=3wpvUXq--ss