The Spa at Four Seasons Hotel Seattle

The Spa at Four Seasons Hotel Seattle sits inside the hotel at 99 Union St and is open daily from 8:30am to 7:30pm. It's a hotel spa in the strict sense: access is limited to hotel guests, and treatments require a reservation. The age minimum is 16, so this isn't a family stop.

The layout splits into a co-ed relaxation lounge with light refreshments and separate men's and women's locker rooms, the women's side adding a sauna alongside its steam room. A backlit Himalayan salt wall anchors the lounge, meant as a spot to sit with tea or a book between treatments rather than a standalone therapy room.

The treatment menu runs six categories deep, covering massage, facials, body treatments, and nail services, plus private Pilates training for up to two people by arrangement. The signature is the Rose Gold Radiance Facial, a three-step facial massage using a wrinkle-reducing wand and rose quartz stones, built around gold-infused, anti-inflammatory ingredients tied to the Pacific Northwest. Other named options include an Evergreen Aromatherapy Escape massage using a melting botanical candle, and nail services like the Emerald City Manicure & Pedicure served with waterfront views.

Given the four-tier luxury pricing and hotel-guest-only access, this reads as an add-on for people already staying at the Four Seasons rather than a destination day-spa booking for outside visitors.