Amsterdam Health & Beauty

This teeny offshoot of The City Street Spa offers a slimmed down version of the treatment menu: manicures, pedicures, and brow shaping—that's it. The most brilliant part of all is that they're devoted to walk-ins, meaning you can pop in for a quickie mani/pedi on a whim while wandering around Nine Streets.

The purpose of The City Street spa is to provide all the services one might look for in a traditional spa, but in an urban setting with busy schedules in mind. The treatment menu includes massages, facials, waxing, eyebrow shaping, and mani/pedis—all performed in a tranquil, minimalist environment. For the guys, there's face-mapping, manicures, and pedicures. There's a mini spa outpost a few blocks away that's really good about walk-ins.

The breathtaking Art Deco stained glass panels, gilded details, and winding wrought-iron staircase at this canal-side sauna were rescued from Au Bon Marché in Paris before it underwent a top-to-bottom renovation—the resulting space is a hybrid of immaculate Dutch craftsmanship and Parisian refinement. In addition to the various baths and relaxation rooms there are infrared saunas, a solarium, and the option to book a private massage. Fair warning: The unisex saunas and baths follow a strict no-swimsuits-allowed policy (towels are okay).

Nestled in the luxe shopping corridor inside the Conservatorium hotel, Skins Cosmetics is a beauty junkie's dream come true. In addition to a far-reaching roster of skincare and cosmetics lines, many of which are clean (Rahua, Kjaer Weis, RMS), it holds one of the most comprehensive boutique fragrance assortments we've ever seen. The staff is helpful but not overbearing, so feel free to approach them if you're interested in a quickie makeup tutorial or guidance in picking out a new signature scent. The gleaming staircase at the center of the exposed brick space will take you directly to the Meraki hair salon, where you can schedule everything from cut to color to an emergency blowout.