This last flat looks quite nice on paper. Is it under a busy flight take off?
You seem to be at the point to take a deep breath, a notepad and pen in hand, and go start viewing places if possible.
If I may say...
It's exciting, tiring, disappointing, frustrating, exhilarating, expensive and incredibly time consuming, in fact its almost full time job.
You could make an excel spreadsheet of potential places with essential and desirable features if you're super-organised. Rate the online area, style, rooms, grounds, price etc.
However in my limited experience, visiting a place for sale is usually far different from the sunny, tidy, photos presented online. You suddenly know the reality.
The UK estate agents say all sorts of crapola, basically exaggerate and often blatently lie.
You decide to make the effort to view and go on an investigative trip: just getting there may be a deal breaker, why is the place now on the market, what's wrong with the house, the grounds, the immediate neighbours, the neighbourhood at night...?
We travelled and viewed about a dozen houses around the UK before buying (3 visits to the one we bought), and ten flats in the local area of London before buying one for the kids.
It's a helluva lot of money so you'd expect to put some effort in to get what you want.
As I say, take a deep breath...
Meanwhile I'm off out to buy a lottery ticket for my dream place:
https://search.savills.com/property-detail/gblhchlac240061