We have used Hetzner for 15+ years. There were some outages with the nastiest being the network ones. But they're usually not "dramatically bad" if you build with at least basic failover. With this we had seen less than 1 serious per 3 years. Most of the downtime is because of our own stupidity.

If you know what you're doing Hetzner is godsend, they give you hardware and several DCs and it's up to you what you can do. The money difference is massive.