Hands down the best bun rieu in the city. If you don't know what bun rieu is, it is a soupy vermicelli dish with tomatoes, ground beef, seafood, and in this particular case, snails. It is much more flavourful and a little more salty than pho. Make sure to put plenty of fresh crunchy vegetables in to make the best of the dish.
Also tried their DIY fresh rolls and they are good. It doesn't seem like this place opens as late as Pho Xe Lua (train pho next door).