Is it a matter of course for the hotel to add extra beds for free?

This is not a matter of course. The free extra bed in the hotel depends on the hotel's relevant check-in conditions and rules. According to relevant public information, only two adults can stay in each room of the hotel, and extra beds are free. In addition to the number of beds provided by the hotel standard, an additional bed fee will be charged. Free extra beds in hotels are not a necessary condition for hotels, and it is not a matter of course.