Check the actual location
Read the map before the room description. Think about how you will spend most days, then compare walking distance, road crossings, transport and nearby restaurants. A cheaper room farther away may add daily travel costs.
Read recent guest experiences
Look for patterns in recent reviews about cleanliness, noise, air conditioning and service. Check whether comments refer to the same room type you intend to book. One exceptional review tells you less than a consistent pattern.
Compare what is included
Make sure the room fits the number of guests and beds you need. Breakfast, a pool, a sea view or late check-in may have conditions. Review taxes, fees and deposit requirements on the final booking page.
Understand changes and cancellation
Read the deadline, local time zone and any penalties before paying. A flexible booking can be useful when transport plans are still uncertain. Save your confirmation and contact details somewhere accessible offline.
Destination background: Vietnam National Authority of Tourism. Routes, schedules, conditions and booking terms should be checked with the provider. Some images are illustrative.