Whichever companions I wasn't using at the time were chilling out there and I knew it where they would always be when I wanted to bring them alone for excursions.
I also used the many storage containers to keep the weapons, outfits, crafting supplies, food and drink, etc that I didn't want to be carrying around the Mojave with me.
Does anyone know what the Fallout 4 equivalent of the Lucky 38 will be?
Where do the companions go to when you tell them to return to base?