You check into a hotel and find a mint on the pillow case. This is an example of which one of Dr. Kano's customer requirements?

The presence of a mint on the pillow case exemplifies the "Attractive" customer requirement as defined by Dr. Kano's model. This concept pertains to features that delight customers when provided, but their absence does not cause dissatisfaction. Guests often appreciate extra touches like a mint, as it enhances their overall experience and creates a positive emotional response.

While it is a nice gesture that contributes to customer satisfaction, it is not an essential requirement. Customers do not expect a mint on their pillow as standard practice; thus, its presence is considered an added bonus that enhances the hotel stay. This aligns perfectly with the Attractive category, which prioritizes exceeding customer expectations and providing surprising benefits that can differentiate services and elevate customer satisfaction levels.