What should be the minimum duration for furnished rentals?

Recently, important regulations have been introduced for renting furnished flats, houses and villas.
One of the important articles of this regulation is that the rental period must be at least 100 days in order to avoid being classified as a commercial enterprise.
The minimum period for renting a furnished house is 100 days.
Shorter-term rentals fall into the commercial business category and you become required to meet many criteria, including the obligation to hang signs.
Personally, I have been focusing on renting furnished housing for about 2 years and I was already accepting 3 months as the minimum period.
Renting furnished housing is an area of activity that is suitable for negative uses. Therefore, the expert real estate agent must continue to work much more meticulously.