I do love that the entire story took place at Hogwarts; a changed Hogwarts, for sure, and I wondered over the decrease in students (suspected there was more to than than met the eye--and I was right), love the idea of a sentient castle that the Headmasters collude with, and esp Snape's finaly explanation of why he was where he was.
Harry's relationship with his kids was heartwarming, esp since none of them were perfect. I was happy to see that Snape and Harry finally found each other, at just the right time. Really enjoyed reading this!