Kathy - don't be too disheartened at this time of year. In the run-up to Christmas, people are always backing off getting into the legal tangle of buying a house, as any agent will tell you. No-one, unless truly desperate, wants to pack and move in the dark and the cold! I wouldn't be too concerned, or reduce the price, just yet. It's surprising how from February, once the onset of winter, Christmas, family visits, winter holidays, and the New Year are all behind, people start to bend their minds to lining up their move in the Spring.
It's an ideal time, though, for you to check for any potential problems with the roof tiles, exterior cracks, signs of damp or mildew, and have those fixed. Make sure leaves are cleared from gutters, drains, pathways, and that all garden debris is raked up and taken away. Keeping it from looking forlorn is important. Any overgrown shrubs are best reduced in late January/February, so that you get a good spurt of healthy Spring growth, and they don't get straggly-looking.
Inside, keep the central heating on Low when cold snaps start. If you don't want to do that, then keep all doors open for air circulation, and a low energy oil heater going in a central room.
If anything is REALLY dated, like faded or slightly detaching wallpaper, it'd be a good idea to paint over the former with a cheap emulsion, or rip it off it's coming really loose and can't be glued back and painted over. If the carpets are old-fashioned but serviceable, Chem-Dry do a lovely cleaning job - they just did Mum's small flat for £150, and the 20 year-old carpet's come up like new! And it smells great, too. Much cheaper than putting down something that someone might want to rip up for a laminate floor, anyway.