I think a lot of domain investors have no real clue what they're doing as far as Google updates and so on go - it's like they think they simply don't apply to them or something. The second you put a site on a domain you own they very much apply, and any damage you manage to do is going to be reflected in bid prices. Or if you even get a bid at all.
Google have been very aggressive in going after low quality sites over the last few years - they have had a series of updates called Helpful Content Updates, Spam updates , and general core updates targeting this sort of low quality stuff. Google publish the list of them
here.
The chance of Cambridge not being burnt in Googles eyes at this point is close to 0%. And there often isn't an easy or quick fix. Given the mess thats been made of this one I'd rather buy VisitCambridge for £2.5k if I was building a big project on that city. Sure your domain is nicer but that other domain doesn't come with the big dose of self harm you've applied to yours.
Lets say someones looking for an Indian restaurant in Cambridge, look at the mess of the page you have live
here. No real content at all, a bunch of keyword spam, no reviews, no photos, no anything really. I can't find one positive thing to say about that page. Look how helpful
the Trip Advisor page is. Thousands of reviews, loads of great photos, contact info, website info, opening hours, etc etc. You definitely wouldn't struggle to find a decent curry from that page, even if you're like me and never set foot in Cambridge before.
Or you can simply use Google Maps / reviews thats at the top of every related Google search anyway. Again thousands of reviews, photos, etc etc. A genuinely useful user experience.
Then compare this to what you've got live. I'd rate Trip Advisor / Google Maps as an easy 8-9 out of 10 quality wise for the user... realistically how do you think your empty page compares? I'd give your page a negative score out of 10, given if I just take a leap of faith and go to your top listing,
you're sending me to a restaurant that closed 8 years ago.
The damage being done here is wild, and it's all self inflicted for absolutely nothing in return. It makes no sense at all.