I honestly thought it was a fake listing & AI-generated. Have they heavily filtered the pictures? The pics don't look real.
I could never afford that & don't want to live in London & don't need such a large property so putting aside all that...
I'm bad at buying houses I like but fwiw, I imagine it's cold & noisy with the lack of carpet in many rooms. I would factor that in nowadays. The "whiteness" of every room makes me think that it will take a lot of work to keep everything looking clean, which in a family situation might dismay me. Conversely, hard floors are good with families.