I agree with that, but remember that VN is a communist country closely aligned with their idol, China and Mr Xi.
Visa policy can change in a heartbeat. Are you OK with walking the tightrope sans net? One has to consider these.
Also, you're overlooking the daily noise pollution from the S.Korean and Chinese package tour coaches (dozens, if not hundreds every day) that love to lean on their klaxons. That gets old really quickly.
That said, the beach can be lovely (when no plastic pollution has spoiled it) and the climate is ..... a nice contrast to much of SE Asia.
And yeah ..... baguettes and banh mi are THE BEST.
Cheers buddy