For a truly local and relaxing escape from the city buzz, slip into Mannen-yu, a traditional public bathhouse tucked away in the heart of Shinjuku. This is where you can experience a genuine piece of Tokyo life, soaking in various pools that range from piping hot to refreshingly cold. It’s a simple, no-frills spot, cherished by neighborhood residents, making it the perfect place to unwind and experience an authentic Japanese sento.