I can't recommend a particular place, but you would most likely want to see if any apartment complexes in that area offer "corporate housing" units. Some do. Basically they're just furnished apartments available for businesses to use short term, but I think they may allow "regular folks" to rent them as well. Just tell them you're relocating here.
You can google "kennesaw corporate housing" to get results like this:
kennesaw corporate housing - Google Search
Your second option is an "extended stay hotel" that allows people to stay for longer than normal periods of time for reduced fees that are paid weekly. On the plus side you get normal hotel ammeneties. On the negative side, if you don't pick a good place, some shadey characters or illegals may be your neighbors.
Google search for that:
kennesaw extended stay hotel - Google Search