All though, presentation is important. I have gone into a few occupied homes lately, and had they picked up their things, or cleaned a little better, I may have not gone running and screaming from the house.
When I bought my house 15 years ago, it was in absolute perfect condition. Unlike some of the very same homes in the same track. The selling feature was the presentation.
I don’t think moving a couch will sell you a house you are not really interested in, but if there are 2 houses that are alike, I would think that most people would go for the one with the nice decor.