Preparing your home before putting it on the market is essential. Revalue your property. If you improve the perception of the prospective buyer, he will be willing to compete for it and pay more. The old idea "the buyer will do it" does not work anymore.
The photos in the advertising media will attract a greater number of potential buyers. Depersonalize your home and help the buyer see himself living in it. Buyers want to se the house, not your stuff. Make your home more attractive and up-to-date with no cost or a minimum investment, it does not imply anything like a reform at all.
What should the buyer perceive? Amplitude, Luminosity, Cleanliness, Functionality, Pleasant odors ...