If you haven't experienced Google translating insistently German responses from one of their DC techs you probably haven't been using them for long enough ;)

As for networking, would encourage installing something like Smokeping

But I don't really access AWS support either, when something doesn't work I've just killed the VM and started a new one. It's less disposable with bare metal servers, I can physically restart the server from their control panel or if issues are not fixable, reset the server with a new Linux OS image, which granted would be a lot more time consuming.

I will add that whilst I'm not in the business of dictating which cloud services business customers would use, I'd agree that I would recommend AWS over Hetzner who are a) paying for & would have to administer it themselves and b) is going to have access to all the managed services they would ever need in future.

I would still recommend they consider Hetzner for any high-resources intensive workloads where their raw compute is vastly less expensive. I'll also chose the cheaper reoccurring cost over convenience when I'm able to self-service it myself.