What about the kitchen, bedroom and bathroom?
We've been here before lol, but it's another area where you and I are so different. I need to have a nice cosy fire to snuggle up in front of during the winter months, and also be able to go into any room I use in the house and for it to be nice and warm.
It also helps prevent dampness in the house, as cold rooms encourage it, so I'd have invested in a proper fire in your lounge and heating system as a priority when I moved in, single or not, and long before I spent money on TVs or hi-fi!!:ner:;)
For me, a house has to be cosy/warm and inviting at all times, and if it's not it gets me down.
Marco.