The short version
Phu Dien is a local north western suburb behind the main roads. Narrow residential streets, universities and newer housing share the same catchment. It works for someone who values space and local prices over a central address, provided the daily route does not require several awkward road crossings.
The street view
The area is more comfortable when the home is close to a local market and a direct road out. New housing can be surprisingly separate from the older lanes, and the distinction matters after dark or in heavy rain. Inspect parking, drainage and the final walk to transport. The district is not difficult, but it asks residents to organise their own convenience.
Students and university workers may find the location coherent. Anyone working in the historic centre should be honest about the commute before choosing a larger flat here.
Would I live here?
For a west side job, yes. For a central job, only if the extra space justified a road based routine. Phu Dien is an ordinary suburb, and its appeal lies in that lack of performance.