Is it illegal to stay in a hotel for two consecutive days and be cleaned by the service staff without permission?

Constitute a crime. The hotel stayed for two days in a row and was cleaned by the service staff without permission. Contact the front desk of the hotel immediately and ask the hotel to send someone to clean the room and change the bedding immediately. This is all your strength. If you don't want to stay, you can also check out. If the hotel doesn't cooperate, contact the consumer association for rights protection.