I'm as socialist as they come so I do feel for the poor ratio of quality to price. Indeed as you say it is almost borderline evil the way homes are created with materials and decisions that make the lives of those within, at worst, miserable, and at best fraught with noisy neighbours or build quality issues to put a few grey hairs on your heard/chin; all while oodles of money gets siphoned away.
I think those flats look huge compared to one I lived in in Japan. I think you won't go full Jack Nicholson for living in them. The solid walls are a huge plus. It'll be interesting to see what the prices will be. They are rather high. The maintenance fee will be the proof in the pudding (one side effect of life away from English... I feck up sayings all the time.. think "is this right? Alcoves?"

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We seem to know the appalling Obel, but nearby the St Anne's Square building seems very solid and sound; a few standard kitchen units notwithstanding.
And bizarre as it is to say this, I do hope these do 'well' because otherwise we'll NEVER see the LAnyon Plaza apartment cubes started let alone finished.
Council houses should never have been allowed to be sold off. There should have been a 1in, 1 out policy. Those homes, high quality or otherwise, got the bubble started. Instead they've been sold in the Right TO Buy... and then they're sold from under those 'empowered' owners to be demolished and turned into ridiculously £££ flats... Have a look/watch at this BBC film about it in London this year...
The Estate We're In (iPlayer)
(TL;DW - Guardinista article)