Sell the lifestyle as much as the house. People will see your stuff so make it aspirational. If it means spending a couple of hundred quid on some matchy cushions, getting the sofa cleaned and fancy hand wash etc do it.
It doesn't have to be impersonal but pack most things away and just show off the good life. Things that say 'the person that lives here has their tit together, they live a nice lifestyle' - Food or travel books or magazines, organic bathroom products, white company hand wash, white fluffy towels if you have them out, fresh fruit. Not 'in your face' but little indicators.
The reality might be a holiday is unaffordable and you don't have time to cook, head and shoulders is your preferred brand, the organic stuff is shite and you need dark, patterned towels because the kids wreck anything white but you're selling the dream.
Also, it can never be too clean and make sure it smells really clean. De clutter any coat and shoe racks too, particularly if it's the first thing you see.