Infinity Spa

A polished, modern spa on Silom Soi 21, Infinity Spa is where Bangkok locals sneak off when they want the five-star treatment without the hotel markup. It sits inside Siri Square opposite Hilton Garden Inn, a few minutes’ walk from Surasak BTS (Exit 3). Doors open daily from 9:30am to 9:30pm, with the last 60‑minute booking at 8pm. Come for clean lines, calm lighting and therapists who actually listen to what your shoulders need. The menu covers proper Thai massage, aroma oil sessions and Thalgo facials, plus a tidy nail bar if you want hands and feet done before a night out. If you’re settling in, book the 120‑minute Infinity Escape — a signature blend with hot stones and aromatherapy — starting from 3,500 THB (~$95). Service is professional, English is easy, and everything feels looked-after: crisp rooms, quality products, no rush between treatments. It’s a smart pre‑flight reset or a post‑market unwind after a day around Silom and the riverside. Call ahead if you’re picky about times; this place fills up, especially on weekends.