I have a ceramic cube electric heater in my bedroom. It sits on the build in dresser by the window and it is good for a quick warm up in the small bedroom area, but for the much larger rear area I absolutely love the electric fireplace and use it daily during the winter. Mine is made by Dimplex and their web site has very good DIY instructions for repair. When mine quit working last winter I removed it and fixed it per instructions d/l from the Dimplex site.
It works much better than a ceramic cube in a larger area.