There's the north farm in mul it's a pretty safe location, not too many zombies will come in and it's not that far from town. http://pzmap.crash-override.net/#0.45950888731819267,0.20078192841201675,44.78918669290656
I agree with this, I always thought it was weird I couldn't use a tent to protect my character from rain unless I was sleeping in it, or even be able to rest in it.
so my suggestion is to have a "bites only" transmission option in sandbox. This would be for the people who want the threat of infection to be there but don't want to get infected and die from a single scratch.