Athena's Promise - Book One Of The Aegean Trilogy
As the front desk manager of a hotel on the edge of Zombietown, Pallas is used to dealing with angry centaurs, surly trolls, and zombie housekeepers. The trouble really starts when one of her guests ends up dead. But that's not her only problem.
The promise made to the Goddess Athena may well damn Pallas if she breaks it, but she's determined to save her friends, no matter what it takes.