Pakistan has the best human rights (not saying a whole lot) but I’d be afraid of being killed, same with Afghanistan. It’s probably ok in many parts though.
Turkmenistan is the worst on the list. Creepy personality cults. Tajikstan had lots of strife in the past, I don’t know how it is now. Uzbekistan is of course assholes.
So I went with Kyrgyzstan, the second best human rights, although Kazakhstan is probably fine to visit. I might not pick up the language while I’m there, but I’d hope I’d at least least how to pronounce Kyrgyzstan.