Mermaid Spa is a Russian bathhouse and banya in the Seagate neighborhood of South Brooklyn. The facility offers three Russian steam rooms, a dry sauna, a Turkish bath, two ice-water pools, a Jacuzzi, and additional relaxation amenities in a lodge-like wooden hall. Guests can also book a traditional platza service using a birch venik. Mermaid Spa also offers memberships, and gift certificates may be used toward admission, food, drinks, and services offered at the spa.