The one downside, of course, is that all of their datacenters are in Europe. So if your customers are not in Europe, and latency is a big issue, then that could complicate things.
As the old saying goes "that would be a good problem to have".
Too early to tell here. The site hasn't been promoted yet and is in "private beta" mode, so the traffic is trivial. Subjectively, when I visit for testing and admin stuff, it feels fine, even though the servers are in Europe and I'm on the US East Coast.
I'm also curious about their management functionality.
I find Linode's stuff to be a little better from a UX perspective, but I have no particular complaints about Hetzner so far. But keep in mind, I'm running one app there that I stood up a month ago, which has no paying customers yet. So I can't exactly offer the most in-depth critique ever.
How do you do it?