That is the only way to explain the inconsistencies of space in the room. With nothing else to do, he had been lounging around in the room.
He sometimes goes to the middle room trying to open the locked door. When he is tired trying to open a locked door that could not be opened he would go back to his room and rest and think of a way to escape
He tries to use his strength but in here, all of his powers seems to be neutralized.
He could tell then that the soil that is sued to make the ground that he walks in, the walls on the room are made probably from the soil of Bubble Land
not even once he could let down his guard.
It felt like he was in an experiment.
No matter how good the food, no matter how comfy the bed, it is not a pleasant feeling knowing that you are locked by someone you do not know, whose motive is unknown to you