Room of Requirement, of course! Surpassed itself, hasn't it? the Carrows were chasing me, and I knew I had just one chance for a hideout: I managed to get through the door and this is what I found! Well, it wasn't exactly like this when I arrived, it was a load smaller, there was only one hammock and just Gryffindor hangings. But it's expanded as more and more of the D.A. have arrived.
J. K. RowlingHe lay face down, listening to the silence. He was perfectly alone. Nobody was watching. Nobody else was there. He was not perfectly sure that he was there himself.
J. K. RowlingIf only the hat had mentioned a house for people who felt a bit queasy, that would have been the one for him.
J. K. Rowling