Yo where is the hidden bunker or whatever for the covenant?
There is a way to make that place a settlement too. It's the only place with big beds and bunk beds. If you end up making it a settlement, everything will be red and you can't sleep in the beds because they are owned, but if you set up a radio broadcast, and attract settlers, just take the first person that comes and assign them to each bed and now they become your beds. Also there is a trick to get rid of the defense turrets there and set up your own. You can't scrap them individually, but if you set up a wooden floor piece anywhere on the ground on the settlement, you can then select and hold the turret, and drag them to the wooden floor. Then scrap the wooden floor and it will scrap the turret attached to it. Problem solved.
I made that place my home settlement, sent a few Mr. Handys from grey garden or whatever, dressed all the settlers in pre war shit and now its a fully walled in, massively secure and semi pre-war settlement.