Sacrosanct
Legend
I don't think I've ever lacked doing a short or long rest (with or without those names in whatever edition) because of lack of safe place to go.
Lack of rest has always been, There stuff happening RIGHT NOW!!!! hurry!
locking your self in stone isn't going to help the fact that you can't sleep 8 hours when the orcs will be at the gates in 4.
While other stuff going on has been a factor, in my experiences the vast majority of things preventing rests are finding a safe place. Infiltrated the dungeon/fort/castle and now looking for a room that is safe? Good luck. The rest of the lair/dungeon/fort/castle is aware of your presence, and is out looking for you. 8 hours uninterrupted is practically impossible, and even a 1 hour short rest is a challenge.