I'd leave it inside my apartment. Much safer than a cubicle.
Last year I left my bike outside when I was riding it to avoid the daily thaw cycle and it got stolen. It's a different bike this year even though I got the old one back, which is way too nice to leave outside. I've been putting it in the shower/tub each night to avoid a huge mess. You should clean it off before leaving, and probably at least lube the chain.