Harry almost says something to the effect of 'not here it won't', but he catches himself in time. Arrival in a strange fairy land is odd enough without having to come to terms with a greatly extended lifespan.

"Aren't they? At least the hallways here tend to behave and don't reshuffle themselves in the middle of the night." Well, not too often, anyway. "If you'd like, I can help you get to wherever you'd care to go or give you the two penny tour?"