Did you know if you just assign the beds in covenant they are no longer owned

You can assign settlers to them, they will become "green" then. In my game 3 beds in guest house were bugged. So I had to replace them. But you can check and see if settlers will use them. There were 2-3 similar threads here with useful tips for Covenant.

Here is one http://www.gamesas.com/topic/1591422-covenant-taken-with-hostility-mysterious-turrets/