Looking to unwind in Mercer Island? Below are 10 spas in Mercer Island, WA — compare ratings, hours, and amenities to find the right place to relax and recover. Providers listed in Mercer Island cover day spas & saunas and medical & wellness spas. Mercer Island sits in King County, Washington. Other Washington cities covered include Seattle, Spokane and Mill Creek.
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We currently track 10 spas, saunas, and wellness studios serving Mercer Island, WA in King County.
Rough planning ranges for the Mercer Island area:
| Service | Typical range |
|---|---|
| 60-minute massage | $50–$150 |
| Facial or body treatment | $100–$150 |
| Sauna or day-spa session | $50–$100 |
Mercer Island spa prices depend on the treatment and length; packages and memberships lower the per-visit cost. Check that therapists are licensed and the space is clean and calm.
Many Mercer Island listings also offer massage, sauna, facials, and other wellness treatments.
In Mercer Island, a 60-minute massage typically runs $70 to $140, facials and body treatments $80 to $160, and sauna or day-spa sessions $30 to $90. Packages and memberships lower the per-visit cost.
It depends on your goals, from monthly for general wellness to more often for chronic tension or recovery. Ask a licensed Mercer Island therapist what suits you.
Reputable spas use state-licensed therapists, and medical or prenatal work may require extra certification. It is fine to ask about credentials when you book.
Arrive early, mention any health conditions or allergies, and tell the therapist your preferred pressure and focus. Many Mercer Island spas include sauna or lounge time with a treatment.
The Mercer Island area may include Korean spas and jjimjilbang, Scandinavian saunas, bathhouses and thermal baths, float tanks, infrared sauna and cryotherapy studios, salt caves, and day and medical spas. Use the categories above to filter by the type of stress relief you want.
A sauna or day-pass entry often runs $25–$60, while treatments like massages, scrubs, or float sessions typically range $60–$180 depending on length and the spa. Many places offer packages and memberships — check current pricing before you go.
We list genuine wellness and relaxation spas and filter out illegitimate operations. Inclusion isn't an endorsement — always check current hours and reviews before visiting.
SaunaMassage TherapyHydrotherapyCold PlungeBody ScrubWellness
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