Copacabana regains its glam with Emiliano Rio. Folding, articulated panels filter the sun through floor-to-ceiling windows in the 90 modish rooms, which feel downright cozy thanks to woven wall fabrics and natural woods. Ring up the on-call butler for caipirinhas on your glass-railed balcony, or show off your pedicure in personalized Havaianas flip-flops by the rooftop infinity-edge pool, where perfectly coiffed staff in crisp designer uniforms attend to your wishes. A living wall brings the rain forest inside Emiliano restaurant, which uses locally sourced seafood and produce for its contemporary Brazilian cuisine.