Help Google identify the language of the pages – simply add a snippet to differentiate the languages. An example of this…
www.inzonedesign.com/about
www.inzonedesign.com/es/about
www.inzonedesign.com/it/about
The “es” tells Google that the content of that page is in Spanish, while “it” tells Google that the content of that page is in Italian. In order to improve your multilingual site’s SEO, ideally, you would want to translate the slugs for each language as well, so…
www.inzonedesign.com/about
www.inzonedesign.com/es/sobre-mi
www.inzonedesign.com/it/chi-sono