There is a room with no doors no windows nothing and a man is hung riddle with answer

Answer: He was standing on the Ice Block

Explanation: Keeping the things in mind: Visualizing a room with just a fan and a man hung on it, with some water on the floor. The first thing that strikes my mind is that He had a rope in his neck tied to the fan and was standing on a big ice cube/ice slab. As the ice started melting, he starts dying.