This is the first and only thread about this both on the forum and on Google, so I figured I’d share my experience here even if that means bumping a 9 month old thread.
We have been using Hetzner’s ARM64 “CAX41” plan for about 6 months now and we haven’t encountered any issues related to ARM64 at all. We’ve been using Ubuntu 22.04 with plans of updating to Ubuntu 24.04 “one day”.
Would recommend.