Quality control by random inspections
The classification of holiday apartments and guest rooms is based on a self-declaration. During each classification period, the STV (Swiss Tourism Federation) arranges for at least 25% of the properties classified in that period to undergo random inspections, in order to ensure compliance with the quality standards and to motivate landlords/owners to make continuous improvements to the accommodation they offer.
The flowchart for the organisation of the random inspections can be found here in german or french.