Post #285 of this very thread from coffee guru bombcup
Yeah freezer is good because the conditions are totally inert. Lots of blind cupping has been done comparing beans frozen for up to 3 months with fresh beans and it has mostly been impossible to differentiate.
Freeze your beans in bags containing a weeks supply so you can just remove what you need. Allow them to reach room temp before use, standard freeze only once rule applies.
Well worthwhile if you have sporadic access to fresh beans or if you home roast. (did I just admit that?)
Post #285 of this very thread from coffee guru bombcup