Simple:
* The tidiness of her apartment was impressive.
* He was known for his tidiness, always putting things back in their place.
Descriptive:
* The tidiness of the library was a welcome contrast to the chaos of the street outside.
* Despite the flurry of activity, the office maintained a surprising level of tidiness.
Comparative:
* The tidiness of her desk was a far cry from the messy state of her kitchen.
* The tidiness of the new student's dorm room surpassed even the expectations of the resident advisor.
Figurative:
* The tidiness of her thoughts allowed her to organize her speech with ease.
* The tidiness of her life was a façade, masking a deep inner turmoil.
Remember, the best way to use "tidiness" depends on the context and the message you want to convey.