Most illegal hotels are located in the city's center, especially in the Red Light District. In the past three months, the Center District closed 10 illegal hotels because they were violating fire safety rules, said Eikelboom. Other illegal accommodations couldn't immediately be closed because of fire regulations, but the owners face high penalties if they do not comply with the city's demand to stop operating as a hotel.
The city is planning to resume its hunt for illegal hotels next week, and will certainly use all the information it can get, including information available on Airbnb, Eikelboom said.
Airbnb didn't reply to a request for comment.
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