Why don't hotels let adult children live in a standard room with their parents?

From the perspective of hotel operators, they have the right to formulate hotel accommodation rules and policies to ensure the hotel's operating order and service quality. For some hotels, they may make some regulations, such as stipulating that only one adult or two adults can live in a standard room to ensure the safety and hygiene of the room. In this case, it is reasonable for the hotel not to let adult children and parents live in a standard room, because they have the right to make such a rule.

On the other hand, from the perspective of residents, this provision may cause some inconvenience and dissatisfaction. For example, some families may only book a standard room for economic reasons, but they have adult children and need to live with their parents. In this case, the hotel does not allow adult children and parents to live in standard rooms, which may make these families feel unfair and dissatisfied.

So whether it is reasonable or not depends on different situations and angles. If it is necessary for hotels to make such regulations to ensure the safety and hygiene of rooms, then such regulations are reasonable. However, if this regulation is unfair or inconvenient to some guests, the hotel should consider amending this regulation or providing other solutions to meet the needs of guests.