Fence is falling down, garden is a mess, pictures propped up against the wall in main bedroom, everything is grey, first photo is of a featureless wall, and the worst thing is the house looks unoccupied and barely furnished.
Every room has to have a clear purpose and purchasers have to be able to envisage themselves living there. You can’t just have an empty room that’s described as (eg) “dining room” on the plan. People are forming an opinion on a quick look. They don’t have time or patience to look at a pic and then at the plan and think, oh yes I could fit my table and chairs and a bookcase in that room. They just think “empty room, wide angle, could be any size, scroll on.”