"With Pleasure" - indeed!
Sweet! Great vampire!Snape. I hope he not only keeps the paler skin but the younger bod as well, lol. Harry and Severus both deserve it.
I'm impressed and grateful that while this story traces some of the same major elements as Tira Nog's classic "Nocturne" - Snape a vampire, the chance of an experimental cure, and Harry helping with it - you've gone in completely different directions. Indeed, Harry's character is so different (*love* love love his job!), and in keeping with that, so is his personality. For instance, he negotiated the "call me Harry, not Potter" issue so very deftly and clearly, he must have use this skill on the job a lot!
Hermione is terrific in this fic as well. Also a fun exploration of Legilimency and "vampiric shields." This plot point, while complicated (and has to be, to set up teh Snarry secks), is so very clearly explained - good job! I do have to wonder what Snape has been doing the last decade, and where... and I'd love to see him interact with Harry's work. I suspect he'd approve of protecting abused children. Especially given how many of those orphans must be Slytherins.
The story has little tension or angst, which creates a smooth and pleasant first-time & Romance (romance is undoubtedly following!), and keeps the vampire-cure plot central. The pleasure in this fic was very much for the reader - we always need more happy-fic, and this was a fun one. :D