1. Find alley 151
From Đồng Khởi's pavement, turn into the tunnel-like little alley (shop signage hangs overhead).
2. Climb the stairs
Pass the alley fork and climb the old concrete stairs — OKKIO's door is the first one you see.
3. Walk in
No reservation needed. Mornings draw students and tourists; the loveliest hour is 4pm, when the sun slants through the arched doorway.