They have German and Finnish data centers, as well as American. Pricing is pretty competitive, and unlike anything super autoscalable in AWS, it’s predictable.
They offer an email service that comes with their basic webhosting service, which is a bundle that costs less for 100 inboxes than Google Suite or Proton for just one user, if all you need is email.
I reckon you could also route plex running on a Hetzner VPS through a VPN and have the benefit of less latency between your storage and VPS, at the expense of slightly more overhead elsewhere (the VPN).
AirVPN is an inexpensive European VPN that allows port forwarding (not strictly necessary for Plex, but I believe you need it for direct connections, which perform better).
Or there’s Jellyfin and Emby. Can I ask why you chose Emby over Jellyfin? I see the latter recommended more often, but I haven’t tried Emby so no idea how they compare for real.
Honestly it was a coin flip at the time between Jellyfin and Emby.
I liked how I could change the media folder icons to my own custom ones and that was enough to experiment with Emby.
Did the usual spouse test, nobody really noticed a difference so stuck with it.