Land at Hanoi (arrival 5:30pm). Take a pre-booked airport transfer or taxi (30–60 minutes depending on traffic) to your hotel in the Old Quarter to drop bags and freshen up.
Try bun cha (grilled pork with noodles) at Bun Cha Hương Liên (open ~10:30am–10:00pm) or the local specialty cha ca at Cha Ca Thăng Long (open ~10:30am–10:00pm). Both are iconic Hanoi dishes and located in/near the Old Quarter.
Evening stroll around Hoan Kiem Lake; on weekends (Fri–Sun) the Old Quarter Night Market operates ~7:00pm–11:00pm offering street food and souvenirs — great first-night atmosphere.
Enjoy cha ca (turmeric fish with dill) at Cha Ca Thăng Long or try a variety of Vietnamese dishes at Quan An Ngon (both open for lunch ~11:00am–2:30pm).
If you didn’t eat here earlier, Quan An Ngon offers many Vietnamese dishes; Bun Thang is a local Hanoi specialty for a lighter dinner (restaurant hours typically until 9–10pm).
Attend the traditional Vietnamese water puppet show — common showtimes include 7:00pm or 7:30pm; tickets typically sold in advance. Check exact showtime for your date.
Many cruises offer kayaking or smaller boat trips into lagoons — relax on the water and explore karst formations; usually available until late afternoon.
Climb the steps to the Hang Mua viewpoint (open ~7:30am–6:00pm) for panoramic views over Tam Coc and the surrounding karst landscape — great photo spot.
Allow plenty of time for airport transfer and security. For an international flight at 12:30pm, depart hotel around 8:30–9:00am to arrive ~3–4 hours early (Noi Bai to city ~45–60 minutes; allow extra for traffic).