Having been to about ten 24 Hour Fitness locations here and in California, this location is probably one of the least impressive.
While the staff is friendly and the gym itself is clean, the facility is small and on only one floor (note that it is a 24 Hour Active, not a 24 Hour Sport), and has an industrial feel - like it used to be an old Costco. Weird. It's never really all that busy, so waits for machines or weights are minimal. Gymgoers in North Phoenix will be happy to know that a new 24 Hour Fitness Sport is opening on 43rd Ave. and Bell in May.