I think this house is a bit tricky, to be honest. I rather like a bungalow and I wouldn’t feel the need to immediately rip out the kitchen and bathroom - nothing wrong with them, from my point of view. So I don’t viscerally hate it, like some people
seem to 😆
But, it IS a bungalow, OP. And there’s no issue with that, it’s not a bad thing, but it is what it is. Traditional elderly bungalow buyers might not want an upper floor or large garden. Some people don’t like the sloping ceiling of the upstairs rooms, so wouldn’t be interested. So the pot of potential buyers will be smaller, I suppose.
With a big garden it might appeal to a family with young DC, so the garden needs to be made much more of a feature of with photos and description in the listing.
It does look like an older person’s house, because that’s exactly what it is. You can’t change the furniture, but decluttering and taking up the rugs might help it look less fussy, so people can see the underlying potential easier without being overwhelmed by ‘stuff’. Definitely remove the blinds in the conservatory, they might be practical but look really ugly.
I don’t know how old the house is, but it doesn’t have any nice original features to draw a buyers eye, while at the same time needing quite a bit of work for buyers who like a modern aesthetic.
If at all possible I think the plastic grass at the front needs to go - some buyers will see it and be instantly put off. Might you be able to convince the in-laws to change that, at
least? Get some real turf laid and it’s one less tick in the ‘cons’ list for potential buyers.
I don’t know the area, but a quick google shows that the price is a real issue. There are larger (perhaps nicer, depending on your personal preferences) houses for sale in the same area right now that are significantly cheaper. It might be difficult for your in-laws to change their mindset from “we’ve lived here for years and have made perfect for us”, so they’re more able to view the house in a coolly detached way, as a potential buyer would. But they need to try to understand how the house presents and what its current actual value might be, or it simply just won’t sell.
Best of luck!