It doesn’t depend whether you are planning on living in a dormitory or in a flat: when you arrive in the Czech Republic you are obliged to provide a document affirming your accommodation within 3 working days. You also need this very document, when you apply for a visa at the embassy. Shortly said, proof of accommodation is a document which solves many issues concerning your visa in the Czech Republic.
Eva a Hana Luskašovy aka DUO SMILE Ultraprevention Dental Experts take care of English speaking patients in Brno for almost 2 years already. Graduated with degrees in medicine and dentistry, gained experience in London and New Zealand, these always smiling twin-doctors don’t just fix problems of people’s teeth.