I have only been to the bar/ restaurant, although I have heard that there is also a design store (probably not open late at night)!.
This bar is right in the middle of one of the hotspots of Milan nightlife. However what really distinguishes this place is two things -
1. It is full of plants everywhere, almost making it feel like you’re having a drink in the garden
2. Part of the garden area is covered by a type of transparent plastic tent, which is classified as outdoors, meaning one can smoke here (smoking is illegal in public places in Italy). It is also warmed up during the winter.

Atmosphere is good, expect the usual goodlooking and fashionable crowd of Milan.

Service is ok, but drinks are quite expensive, although the general area is expensive.

Overall a novel and nice place to have a drink in the centre of Milan’s nightlife.