Portable Metal Outdoor Fireplace
I've actually stayed in a cabin that was heated by a portable fireplace exactly like this one. And while it may or may not be a good placement, fireplaces like this are better off outside. The metal construction radiates heat in all directions so it's perfect for gathering around. Indoor placements are generally against a wall rather than in the center of a room. So unless the surroundings are shielded, too much heat radiated could be dangerous.