We have one of these Morso stoves. It's a neat looking little parlor stove with a squirrel cast onto the side. I hooked it into an existing fireplace in our old house. It burned best with pea coal. We were able to burn through the night with it even though there isn't much of a fire box. I bought an extra front cross piece and the angle inserts that allow it to burn coal better. This helped increase the depth of the fire. Ours is now sitting out on our porch not hooked up and someday we may plumb it there to allow us to use our 3 season porch in the winter.
We have a Harman Mark II now. The Morso does seem like a toy compared to it. But, back at the old house though, we really enjoyed it in the living room and the way the cats always lounged around it proved it was working well for what it was. Compared to a wood stove? still better.