Spa Siam Orchid

Spa Siam Orchid is a day spa known for Thai massage, with signature treatments that combine traditional Thai massage with aromatherapy or a heated herbal compress. The menu also includes Swedish, deep tissue, prenatal and four-hands massages, foot massage, and jade gua sha facials. The spa was named to Yelp's 2025 Top 100 Local Businesses list.

Treatments take place in private rooms with a shower, in a Thai-style decor. Sessions run from 30 minutes to two hours, with prices listed on the menu starting at $100. Gift cards are available, and appointments can be booked online. The spa sits in San Mateo near shops, restaurants and parking garages.