I don't think it would be Illegal in and of itself.
But I would say if the someone isn't a parent,
then it is a VERY bad idea.
motel. or you can try those housings that are meant to help people in tough situations.
Motel 6.
Super 8 motel or Motel Banking co.
a motel
Motel 6
at a motel
In Washington State, you generally need to be at least 18 years old to rent a motel room. Some establishments may allow those who are 16 or 17 to rent with parental consent, but this varies by location. It's always best to check the specific policies of the motel you plan to stay at before making a reservation.
Motel 6
Motel 6
Extended Stay Motel rates vary because of different factors, such as location, amenities and length of stay. On average, expect to pay somewhere around the $40 to $90 range per day.
Mariott Key Tower
She stayed at motel 8