Thongsmith Siamese Boat Noodles is a Thai boat noodle shop on the fifth floor of Central Embassy in Bangkok. Customers order beef or pork noodles and choose the noodle type, toppings, and spice level. It is open every day from 10 a.m. to 10 p.m., and the line is long at lunch and dinner. The restaurant is small and the tables are close together.