Preparing your home before putting it on the market is essential. If the presentation is poor you will lose buyers. Revalue your property! If you improve the perception of the prospective buyer, he will be willing to compete for it with other buyers and pay more.
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 see the house, not your stuff. Make your home more attractive and up-to-date with a minimum investment, it does not imply anything like a reform at all.
What should the buyer perceive? Amplitude, Luminosity, Cleanliness, Functionality, Pleasant odors ...