"Would you take your wife/partner there?"
Itīs ok. for a while but, depending on your (or her) lifestyle will get pretty boring after some time. Nearest larger cities are Gabs and Windhoek, if you want to call them cities that is.
"Is it safe?"
Botswana still is one of the safest places in Africa. Burglaries on the increase, yes, but still very safe all in all.