Love the layout & artwork. Short punchy descriptions work well, nice having a smaller map on each page; less flicking through the PDF.
Yes, it's a bit rail roady, but for a quick one shot that's fine. Couple of rooms didn't have much purpose, I'll give the guests something to do next time, possibly have Harmon try to abduct another member of staff.
Used it today as an introduction to ItO... channeling the Ghostbusters hotel scene. Much hilarity ensued!