Thanks to your posts here, @ljpp, I’ve just done this myself (pulling my data from Scaleway). As with you, once Hetzner actually provisioned the server (almost three hours) the migration went without a hitch.
On the east coast of the U.S., I’m seeing load times about 20% – 25% faster than Scaleway’s. (Of course, it costs about 30% more, too!)
How has your last four weeks with them gone?