Well it's decor is not to my taste, at all - but that's a personal thing. But when I looked at the photos from the last sale, I would have at least gone to look at it, then. It looked like it had some space, if not a lot.
Your photos are pretty awful, to be honest and you need to tidy up and let people see the potential, or you will have difficulty getting many people coming to even view it. It looks, dark, cramped and needing a lot of work in the garden from the current photos? Including the decking which looks like it is needing replaced. And the barbed wire is incredibly off-putting.
I agree with others, that you should think about contacting an EA, for a valuation and maybe for them to list it. Presumably more expensive than the online folk you are using - but might actually be worth it in the long run?
You will find some people will be put off by the front door opening directly into the living room and the stairs going up from the living room, but that can't be changed, and it won't put off everyone by any means. Mid-terrace houses are not to everyone's cup of tea either, but again, many won't mind.
I think, given that most people will feel that there will need to be a lot of redecoration done very quickly plus work in the garden , wanting £40K over the selling price in 2020 is too much.
Sorry to be blunt, but you wanted opinions and I'm afraid that is mine. I do think that it is basically a nice house - but there are negatives for a number of prospective buyers. And the market is slow just now.