It also has a fireplace.  

We converted the half bath into a full, closed off a section of the loft as a private bedroom, cleaned up the walls, added stone to the brick fireplace, refurbished the cabinets, replaced the counters, installed new flooring and lights throughout, custom build a porch swing, some landscaping, and then operated the property as a vacation rental for 6 months.

Living room features gorgeous wood fireplace tiled all the way to ceiling.

Refinished bathroom, refinished basement, turned garage into bonus room/ mother-in-law suite, upgrades backyard with fireplace and pool.

No need for things like fireplace for example.

And I’d change the game/fireplace living room to a space for four people to gather around the fireplace.

Another issue that can be problematic and costly, are changes to floor plans that have been made to a home over decades, especially "conversions" where a large home is cut up into 3, 4 or more separate units, with kitchens and baths added for each, and often fireplaces blocked off or removed.

Finished basement and 2 wood burning fire places.

Also a wood fireplace would be helpful.

The other thing we did for supplemental heat is a gas fireplace that had its own thermostat.