Every known location is unsafe! Pesky zombies can chase you in radius, but what about the forest, mountain, and some others? They are the best spots to make a home, but would it be tiring if you're too far away from known locations?
My favourite place is the blocked-up house. Reasons? No zombie can get into the house, plus I get free stuff everytime I log into singleplayer, especially the military box which gives me either magazines/slugs for my Zubeknakov/Mosen/Novuh (also civilian bullets that will refill my magazines). Another reason is that I could Xp farm, by sniping civilian zombies with the Zubeknakov, and then melee the rest with the katana. If I'm hungry, I can get food from homes.
Things in the camping place:
- Barricades (for decoration)
So if anyone's reading this, it would be fine to share your favourite spot. It can be either for single player, multiplayer or both!