In the search stage
A prospective guest rarely lands directly on one specific accommodation. The starting point is almost always a list: Google search results, an overview page on a rental website, a tile view at an operator. In that kind of list, visitors decide within a fraction of a second which tile is worth a click and which is not. The photo is essentially the only signal at that moment.
In that kind of list, a grey sky, a poor crop, a house half-hidden behind shrubs or a backlit interior shot disappears at once. Not because visitors consciously weigh those things, but because a tile placed next to professional photos simply attracts less attention. Photos also appear beyond the website itself: in Google results, in shared links, in preview cards on social media. What does not work in a tile does not work there either.