Vast, buzzy (read: loud), hall-like restaurant serving hotpot and other Vietnamese dishes. Be careful what you order blindly off the (Vietnamese only) menu: ba ba is tortoise, ran is snake, ech is frog and nhong ong is pupae (yes, pupae...). It's just north of central Ha Giang, west of the Lo River.
Duc Giang 2 Restaurant
Ha Giang Province