Tokyo Health & Beauty

Establishment neighborhood
Niwa No Yu
3-25-1, Koyama
Talented landscape architect Kenzo Kosugi designed the lush and meticulously kept Japanese garden that this beautiful onsen is built into. Luxuriating surrounded by the greenery and prettily placed rocks is indeed heaven. There are male and female soaking pools and a central pool for all genders, as well as saunas and outdoor hot tubs. You have to be at least of thirteen years old at this spot, so the vibe is more serene than at some of the larger onsens, where children have free rein.
The Spa at Mandarin Oriental, Tokyo
2-1-1, Nihonbashi Muromachi
The hotel's clean lines and glossy flourishes extend to the gorgeous spa. With male and female bathing pools, an amethyst crystal steam room, a sauna with a million-dollar Tokyo view, and treatments that verge on out-of-body incredible, this place is supremely pampering. Every session starts with a soothing foot-bath ritual and a consultation. The Oriental Harmony treatment is over-the-top, with two therapists working together to sooth, replenish, and balance skin with a body scrub and a stimulating massage. There are only four treatment rooms here, which means you should book your session well in advance-and also that the vibe is beautifully intimate.
Hoshinoya Tokyo
Hotels don't get much sleeker than Hoshinoya Tokyo, a spectacularly modern take on a ryokan (traditional Japanese inn) that's ensconced in the city's thrumming financial district. You slip off your shoes when you get there and you're in another world-a calm, seductive, luxurious one-as you make your way down the sandalwood-scented, tatami-lined hallway. There's a sake-stocked lounge that's definitely worth a linger, but the onsen is the biggest draw, with its series of indoor and outdoor hot spring bathing pools on the seventeen-story monolith's top floor. The naturally salty water is therapeutic, energizing, head-clearing. You haven't really experienced Tokyo until you've gazed out at its twinkling lights from a bubbling tub of hot spring water.
Shimizu-yu Onsen
3-9-1, Koyama
There are two distinctly wonderful bathing experiences at this onsen: The amber-colored water in the Golden Hot Spring is iodine-rich and naturally maintains a temperature of one hundred degrees, while the inky water of the Tokyo Black Hot Spring feels almost gelatinous and gets its color from the skin-clearing minerals. There's also a gorgeous hot stone sauna and a small selection of food in the lobby. For the complete experience, order the onsen tamago, an egg cooked in the hot spring water, which you eat with a cup of diluted apple cider vinegar.
Maenohara Onsen Sayano Yudokoro
3-41-1, Itabashi
This beautifully landscaped place is actually, miraculously, a hot springs resort right in the middle of Tokyo. Along with large public pools to swim around in, there's all manner of indoor and outdoor baths fed from the free-flowing spring, which is especially rich in sodium chloride. There are full-length tubs you can lie down in, others that look like giant pots, and super secluded hydromassage hot tubs that give you a lymphatic massage as you soak. Book an appointment for a hot stone treatment or akasuri-a vigorous full-body exfoliation-and stop by the restaurant afterward for the most delicious buckwheat noodles.