West facing master bedroom getting hot from afternoon sun
Rather than go full mobile-home park and start boarding (or foiling) up the windows, they do make window film specifically for this:

Gila Heat Block Film (just one example)

That film might be enough to fix the problem, and if you install it carefully, management will probably not care if you leave it in place when you move.  If that alone doesn't block enough heat, you can also get "blackout" shades made of heavy, light blocking fabric.  If you don't want curtains, a light blocking roll-up shade is another option, and basic models can be very inexpensive: