No, you do not need to provide translated documents when applying for the Sanitas Student plan. All required documentation — such as your passport and acceptance letter — can be submitted in their original language, as long as the details are clearly legible and in Latin characters (e.g., English, French, German, etc.).
However, your insurance certificate will be issued in Spanish to comply with visa regulations and to ensure acceptance by Spanish consulates.
Check if your documents meet the requirements and get a quote for Spanish student visa health insurance online.