There is no definitive answer, as each hotel has its own policy. However, most hotels in Colorado require that guests be at least 21 years of age in order to reserve a room. Some hotels may also require a valid credit card for incidentals.
Other related questions:
Q: Do you have to be 18 to check into a hotel?
A: No, you do not have to be 18 to check into a hotel.
Q: Why do you need to be 21 to check into a hotel?
A: There are a few reasons why you might need to be 21 to check into a hotel. One reason is that hotels often require guests to be 21 or older in order to rent a room. This is because hotels typically require guests to have a valid credit card in order to rent a room, and many credit card companies will not issue cards to people under the age of 21. Another reason why you might need to be 21 to check into a hotel is that some hotels serve alcohol, and you must be 21 or older to purchase or consume alcohol in the United States.
Q: What is the youngest age to get a hotel room?
A: The youngest age to get a hotel room is 18 years old.