need advice regarding heat

[Erin K.]

We have a small one-story (~900 sq ft) *uninsulated* brick house we purchased recently as a buy and hold; it was part of a package. It is one story and the current heat is 2 ventless wall heaters. No ducts, no baseboard heat, small crawlspace but not even sure it goes under entire house. I do not like the smell these heaters give off, and I think this heating source turns off potential renters. House is very nice inside otherwise. There is a fireplace. I am considering some type of pellet stove that vents out the chimney. Any other suggestions? One of the wall heaters has a broken ignitor button right now that needs repaired, so I have had an Edenpure electric heater in there this past month to supplement the one wall heater and of course that increased electric bill a lot. I need some creative ideas for heat here. Anyone??