Wow, there's some harsh criticism on the page. I think it's interesting but I'm not fond of all the tall towers surrounding the courtyard, shadow/wind aside, it makes it feel too private, I'd rather see it in a corner exposed to the streets (and maybe have a view of the lake). And do they really need that many tall towers? I think one or two signature ones would good and really stand out. And I agree, that's a huge block just for commercial enterprises.
I do like the terrace approach and the green roofs though.
I have no connections to the Unilever building itself - but it sounds like a lot of people want to keep it? Why's that?