I would add to whatever I said in that thread to be careful about having people show you around. There is a universe of scammers that will 'show you around' in a way that leads to you paying massively inflated prices and them getting kickbacks.
Having someone to show you around isn't a bad thing, but it's best done by having a friend over there or making friends with someone while you are there.
Plenty of options for meeting people while you are there though.
I lived there for many years so feel free to DM me if you want particular suggestions or have questions. I have put myself in this thread so I can keep an eye out of you are looking for anything.
If you want a motorbike while you are there, I strongly suggest Patrick at dragon bikes
Dragon Bike Tours provides Vietnam motorbike hire services for touring anywhere from Ho Chi Minh to Hanoi. Hire top-quality Honda and Yamaha motorbikes for your holiday.
www.dragonbiketours.com
A Canadian boy living over there for a very long time. Really nice guy. Great service. Decent prices. If your bike breaks down, they sent someone to my location with a replacement bike.
Not sure if he will still rent bikes to unlicenced people as I have been out of the country a few years, but shouldn't be an issue. Just keep 10 bucks handy to slip to the cops