An efficient way to visit Hanoi's major sites in one day. My tour was handled by Seven Tours. There was 5 people in the group on that day. The van was clean, spacious, and free wifi was provided on board. The tour guide was friendly and gave sufficient information about the sites that we visited. Lunch was delicious. Finished the tour with a performance at Thang Long water puppet theatre (optional). Overall, it's a great day.