The Grand Budapest Hotel is based on a kind of true story in the sense that it is influenced by Stefan Zweig's works. His writings often depicted the pre - World War II European society with all its charm, decadence, and underlying tensions. The film captures this mood and creates a fictional story within that framework, so it has roots in the real cultural and historical fabric of the time.
Yes, 'The Grand Budapest Hotel' is loosely based on the works of the Austrian writer Stefan Zweig. The movie draws inspiration from Zweig's stories and the world he created, which often had elements of the grandeur and decay of pre - World War II Europe.
The Grand Budapest Hotel is not based on a true story. It's a work of imagination and creativity in the world of cinema. The characters and events are all made up for the purpose of entertainment and artistic expression.