There is absolutely nothing wrong with the house. Its gorgeous and seems good value, although I dont know much about the market in Wolverhampton, or about the specific location of the house.
I imagine its purely that people are too nervous to take on a bigger mortgage at the moment. That house is a classic purchase for the 'we are doing well for ourselves, so we are ready to upgrade to our big, forever home' sort of people.
18 months ago it would have been snapped up. Now, no-one who doesn't absolutely need to move, is moving. It's too risky until mortgage rates settle down, or property prices crash. Neither or which looks likely at the moment.
Either take it off the market and sit it out, or if it's really important that they sell asap, then there is no option but to drop the price. But it seems a shame.