This is a light and frothy book without much depth or substance - but that's not a criticism. I don't think it needed to try to be anything it wasn't. The snarky, comedy-of-manners tone fitted the subject matter perfectly. Alexia's concern with manners (as when she finds the vampire attack which starts the novel rather more rude than frightening) never manages to make her seem like a prig. The secondary characters, such as Professor Tate and Lord Akeldama, were perhaps a bit cliched, but the whole thing bubbled along merrily. Lord Maccon was delightfully growly. The vampires' hive structure was an unusual touch.
There were some steampunk elements, but I think if you were looking for steampunk PNR/UF along the lines of The Iron Duke
, you'd be disappointed.