How to Survive in the Apocalypse with a God-Level Hotel

[No CP, zombies, natural disasters, and god-level hotels opened by others] When the end of the world came, a little transparent person awakened to the attributes of transparency and immense power. He struggled to survive alone until he met a magical hotel and a powerful and mysterious owner. In order to stay in the hotel, he started to fight monsters and earn crystal cores in the end of the world.