The hotel said that two people can stay for three people?

Of course. There is no relevant law in our country that it is illegal to stay in a hotel for three people, so it is not illegal to stay in a hotel double room for three people. Every hotel has different rules, but in most cases, a double room can accommodate three people. The double room in some hotels may be a little small, and it will be a little crowded for three people. However, in some hotels, the double room area is still relatively large, which can accommodate three people. Therefore, you can consult the hotel specifically when staying in the hotel.