First time Leaving Japan Apartment for Vacation – Humidity?

Im going to be gone for about 2 weeks next month (August) and im trying to ascertain what I need to do to make sure mold doesn't grow and such.
I just moved here in March and have never been gone overnight, let alone 2 weeks, so not sure what I need to make sure I do. I moved here from Canada so humidity was never a thing for me.

I live in a new mansion in a small apartment (4th floor). I do have the built in AC. There is a dehumidifier setting but not sure if it will work with the high temps and humidity of summer (worked great in late spring) since Ive only had it on the 'cool' setting for summer. Should I set it on just the dehumidifier setting while im gone or do i need it on the cool setting?

Is there anything else beyond normal cleaning before leaving I should do.

Thanks!