I honestly don't think that the amount of furniture and too many / too few ornaments makes a jot of difference. Or your choice of pictures and colours. I've looked at awful houses in terms of decor - but you have to see past that. The vendor will be taking all their stuff with them!!!
Yes, a beautifully presented house might get more viewers initially, but most people who want to buy look at the price, location (and again and again), the facilities- garden, schools, transport, whether the kitchen and bathrooms need a major refit, and not whether you have an extra chair in your lounge.
This is all cosmetic.