Here are the documents that are obligatory:
Letter of acceptance as a full time student from the Spanish University/School
Health insurance
Proof of financial means during your stay
Criminal Background Check from the country you’ve lived in the past five years (FBI for the US)
Medical certificate
Current passport
Application form
Photo
Accommodation confirmation (not for all countries)
Accommodation confirmation
Not all countries require this document. For example, the USA doesn´t need any confirmation, while Australia and Canada do need it.
The standard pack of documents includes a rental contract for the whole period of studies, a document called Nota Simple (ask the owner of the apartment, they know), and the owner´s DNI.
A simple invitation letter may not be enough, and an Airbnb booking is usually not valid for visa purposes.
BCNLIP can provide you with all the necessary documents to confirm the accommodation; please contact the institution if you need them.
What is proof of financial means?
For a 12-month course, you should have around €8000 in your personal bank account. If your course is shorter, multiply €600 by the number of months you will be studying. For 7 months, you will need 600 x 7 = approximately €4500.
Another option is a pack of sponsorship documents from your parents. In this case, your parents will also have to prove that they are able to support themselves and you and provide a birth certificate, statutory declaration, bank statement, and legalized copy of their passport. Only a parent or a legal guardian can be a sponsor; brothers, sisters, spouses, and other relatives cannot be your sponsor.