Started with $40 for a 4-star in the downtown zone. Got rejected, so I added 3-star and went up to $47. No go there, either, so I added University City and went up to $56. Came through with the Philadelphia Marriott for Friday, April 30 to Sunday, May 2. I'm pretty happy with the result, since the best I found otherwise was $99 before tax at the nearby Courtyard and Hotwire wanted $108 for a 3-star downtown.