Command strips or brick hooks.
Hi Olive, here is a way to hang something outside your apartment. You can also check out command strips for outside (not sure they would work in the extreme hot or cold). Good luck Method 3 Installing Masonry Anchors
Apr 22, 2019
3 Ways to Hang Things on a Cement Wall - wikiHow
https://www.wikihow.com › Hang-Things-on-a-Cement-Wall
You could drill a hole but you need a drill bit for masinary and a new Screw for masinary to
Use wide double sided tape for lightweight items. Use Command Outdoor Hooks or Strips for heavier items. If you don’t own the building, get permission before you drill any holes for nails.