I’m writing a roundup of spas and spa‑like retreats that have unique, quirky, or offbeat offerings. Properties in or near the San Francisco Bay Area are preferred, but locations elsewhere in California are also welcome. I may consider a small number of out‑of‑state options if they’re within easy travel distance of the Bay Area. To submit a spa or retreat for consideration, please briefly describe it in a general sense and explain what makes it unique, quirky, or offbeat. Please also note whether hi‑res JPEG photos are available, and provide the spa's physical address and website. Anything you send may be published.