A good place to use for a camp would be in a castle of some sort. Either your character takes it by force, or he/she...inheretes it. All your companions could have their own rooms, and they would be free to move about the castle at will. Make it like the estate Bann Teagan had at the end of DAO. It was relatively big, but it housed your companions quite nice. In DA2 the mansion felt small, cold, and alone(just like Morrigan's heart) make it less lke that.
It would also be ideal to have some action going down at the castle to. Near the end of the game your castle is surrounded by darkspawn, mercenaries, or a rivaling nation, make your love interest pull an Isabela. Let it be he/she who started it and they would finish it with their death, and then they would fling themself out the window for a self-sacrifice. Or be even more Isabela, and let he/she sneak to one of the back windows or doors of the castle, and leave you there, surrounded by chaos.
Make the castle, camp, stronghold, cave, fortress of Solitude, whatever, have more meaning and depth to it, that's all i'm saying. As explained in long-winded paragraphs above.