Regarding price, I think it helps to consider your pool of prospective buyers.
I think the price is 'correct' in a theoretical, comparable sense as it's a beautiful period property in a good area. There are 4 bed detached priced the same, but they're not as nice.
Unless someone really values the period features/detached - They could either get one of the above, and do it up, or get a semi for 3 beds, later upsizing to a larger detached. This is what most people IME do. A 3 bed detached is a bit of an awkward sell. Usually attractive to people who are 'one and done', downsizers or single people looking for a beautiful house space for hobbies and guests.
Obviously interest rate rises have hit everyone hard and a lot of downsizers are choosing to stay put because they can't get as much as they wanted for their house, and this is having a knock on impact.
Personally I think about 570 would be right, or a bit lower. That's a 5% price reduction.
I hope you prove me wrong though!