Cortman medical is a great safehouse, has alot of medical supplies, which should give you enough for weeks. once you cover all the windows with sheets hordes dont really matter much, you have an upstairs to sleep in / avoid zombies. Its in a good location - close enough to town to scavenge supplies, but far enough away that you dont get as many hordes as the being right in the centre of town. I holed up in Cortman for about a week before being bitten by a zombie when scavenging and died of zombification after that.
