I've genuinely seen a lot worse. There is very little 'wrong' with the house as such. It could be show room white, but honestly it's minor in relative terms and I don't think there's really enough in this particular example to put off a serious buyer.
It's not even cosmetic really.
You could spend weeks stressing over getting it perfect to sell, spending time and money in the process - but ultimately there's no enough wrong with how it is, to really make the difference to a sale.
The problem is 100% the lack of people looking.
I know two people looking to move. One does have a buyer but there's nothing to move to that works for her. And another who has a property he wants but no one is viewing at all. They've just got stuck because no one wants to sell / buy.
Without enough people as a minimum to oil the market it just grinds completely to a halt. And that's where it is.