Endless Rooms to a Feast

I woke up in a completely empty room with no windows and one door. Last thing I remember

was closing my eyes in my apartment at 2 AM, now I'm here in total silence.

The walls are plain white, the floor is cold concrete, and there's absolutely

nothing else except that door. I try the handle, it's unlocked. I step through and

I'm in another identical room. Same white walls, same concrete floor, same single door

on the opposite side. I go through that one and again, another empty room.

This keeps happening, room after room after room, and I'm starting to panic because

there's no way out, no variation, just endless identical spaces. Then I notice something.