I agree that Chrome browser has a generally pleasant interface (to the point that other browsers feel cluttered, to me). However, look at everything else Google touches. It's always cluttered, clunky, and misleading. G+, youtube, youtube mobile clients, youtube clients on consoles and roku and other devices. Google Docs. Even Gmail to a degree. Google has two things that are pleasing as interfaces: Chrome and Google.com's main page. Everything else feels like an engineer tossed it together in a day after working on the backend for two years.
Granted, this is but one man's opinion. Maybe everyone else loves these interfaces...?