SIRIUS.
I can't speak for Caroline and Lucas. She might say yes, she might want to keep her own apartment. But I can ask her.
As for me, I definitely want to go over that house with a fine tooth comb for danger before the twins go anywhere near it. Probably a lot of redecorating? But I'm not against the idea. It would be nice for them to have a backyard and space for their own rooms eventually.