Need help for a dehumidifier in a student apartment

Long story short, I have a small studio student apartment that I'm staying in for a co-op from now until December. I have my own room and some appliances, but I share a kitchen area with my neighbor that has the thermostat.

He's constantly messing with it throughout the day (he's apparently home all day), and it makes my side super humid and muggy on the hotter, more humid days.

I've never met him and don't plan to talk to him about it for reasons outside the scope of this post, so unfortunately that's not really an option.

Looking for suggestions on dehumidifiers or anything else that could help lessen this god-awful humidity in my space.