Does anyone have a good suggestion on good and safe apartment around Ft. Benning?

If you stay north of Manchester Expressway, you should be ok. Price will be higher, but you aren't in the rougher part of Columbus.

The Housing Office on Fort Benning is a good resource. They maintain a list of areas, realtors, and apartment complexes that have less than stellar reputations in dealing with service members. These websites may be of some help.

http://www.benning.army.mil
https://villagesofbenning.com

When you looking for a place you want to be past exit 6. Whsiperwood is often called whisper hood. It looks nice but plenty of break-in.
Plenty of nice homes to rent in the fort Mitchell area on the Alabama side of post.
I just left the csh. I'll say experiences vary greatly. There's been nearly a complete COC turn over since I left. Many that I associate with since leaving don't have much nice things to say. However that may be limited to one company. Overall the unit is pretty close knit.