Google: Using non-English URLs for non-English websites is fine

For example, if you take Mueller, my last name, with the dots on the U, that would be represented slightly differently as a domain name. For browsers and for Google search, both versions of the domain name are equivalent; we treat them as one and the same. The rest of the URL can use unicode utf-8 …

Source: Google: Using non-English URLs for non-English websites is fine