The short version
Tran Quoc Vuong is a university and apartment corridor south of Cau Giay. Its student economy gives the smaller streets a more intimate scale than the main roads suggest. It suits students, academics and younger professionals who want food and services close by, but not anyone seeking a silent residential enclave.
The main road is the route through; the lanes behind it are the reason to live here. Look for a building set back from traffic and inspect ventilation, motorbike storage and the final walk to work or study. The area is compact in feel, though the wider commute still depends on Hanoi’s busy western roads.
I would live here for a university centred routine. It is a strong practical address and a weak retreat.