I just came back from Haiphong in March 2017...my purpose was not to cheong except to go visiting....was there to go Cat Ba and Ha Long...
I dun think you will get much comment or feedback regards to Haiphong...
Let me brief on Haiphong
1. 3rd largest City in Vietnam after HCM, Hanoi
2. very sleepy and peaceful city of 1 mil population.
3. if you going to redlight then just ask the taxi driver to bring you there as only 1 street (hope you speak Vietnamese)
4. VSIP No5 will be build in Haiphong
5. Longest bridge connects Haiphong to Cat Hai will be opening soon
6. The Northern sea port is here in Haiphong.
7. Infrastructure is ready and just need an expat community
8. Cat Bi international airport is ready.
During my trip I dun see many syts....many are working in other cities especially HCM, Hanoi, etc
I knew a few gals in Nha Trang are from Haiphong.