Takanawa Gateway: worth a visit?

Long time tokyo resident here. My Japanese wife’s friend told her that Takenaka Gateway has become nice and/or interesting or something and suggested she go. Any thoughts on its suitability as a weekend destination at one end or the other of an extended daytime urban walk? Happy to hear any possible highlights and also recommendations for a walk to or from the area, ideally 5 km or more.

by denbushi