Namsaah sits inside a 1930s house on a side street off Sueksa Witthaya, painted Schiaparelli pink and easy to spot from the road. The bar is the cocktail side of chef David Thompson's modern Thai project; the food is good but the drinking room is the reason to come. Long bar, deep banquettes, slow service in the best sense.
Bookings are taken direct through the bar or through Hungry Hub for parties of four or more.
The cocktail list at Namsaah is one of the most thoughtful in Bangkok. The bar runs a programme of Thai-leaning twists on classics, all built from infusions and syrups made in-house: tom yum gin, lemongrass cordial, chilli-tincture, palm-sugar simple. Drinks sit around ฿380-460 and arrive precisely. The room itself, with its high ceilings and original tiled floors, slows you down in a way few Bangkok bars manage.
The pre-dinner crowd is local and smart, often arriving for a single drink before going somewhere else. After 10pm it shifts: the food kitchen winds down and the bar fills with later drinkers settling in for two or three. We prefer it later. Service is genuinely warm, the bartenders are happy to talk you through the menu, and the food, if you want it, holds its own.