The Westin Pasadena has graciously set up a discounted group block rate for H40 attendees. The hotel is a quick skip away from the Pasadena Convention Center - they also offer shuttle services to the center and surrounding businesses for those interested in shuttle needs. You can make your reservations by calling the Westin Reservations Department directly at 866-837-4181 – just inform them that you are part of “Halloween 40 Years of Terror- Room Block!"
There are other hotels in the area, which are not offering discount block rates.
To book space at those locations, please visit reservations.arestravel.com/hotel/list/1637/m1240.
The closest event hotels include the Westin, the Sheraton Pasadena Hotel (or call direct via 626-577-1000), and the Hilton Pasadena (626-577-1000).