I live (alone) in an old Victorian house with a den and formal living room and dining room. The LR is now my sewing studio wiith 2 long folding tables plus a 6 ft table for my sewing machine. I host sewing groups so the tables are useful for that plus sandwiching quilts. There are three additional rooms that are used for storage that I choose not to heat or cool. Yeah, my utility bills are still high. Would like to sell this and find a different house but market is so bad here in this small town.