Thanks to Hennenkemper Hanna, professor of a painting course with Heiner Franzen, I have been able to apply as a guest student in the School of Arts Weissensee / Weißensee Kunsthochschule. A small place specializing in art and design in East Berlin.
Opportunities like this do not usually happen very often, at least from my personal perspective. An experience much more interesting -and cheap- than the idea of enrolling at a university master; and probably more enriching.