Anyone can travel on WeChalet and it's completely free to create an account.
The minimum age to book a property on WeChalet is 18 years old.
That said, please note that some hosts may require a higher minimum age in order to book their property and it remains completely to the discretion of each host to enforce such a requirement.
If so, hosts will usually mention such minimum age requirement in the description or in the house rules of their listings.
Feel free to contact any hosts if you have any questions about their specific age requirements.