Very well done! I'm rather in awe of the amount of research and care that must have gone into the architectural and period details, not to mention the language; Severus's voice flows so nicely. I also like the format and the way Harry gradually becomes a more vibrant character as Snape allows himself to see and appreciate Harry as he is. It really lends a sense of common experience and emotion between the reader and the narrator. Lovely work. :)