If you want bang for your buck, Contabo (Germany) might be for you. If you want reliable service, Leaseweb is based in the EU (Netherlands). There's also OVH (French) which provides decent service with their cheaper subsidiary Kimsufi (super cheap, older model dedicated servers).

As for companies which I don't know much about quality wise, there's Strato (German I believe), CloudVPS (Netherlands), Hetzner (Germany) and Upcloud (Finland).

I only know about North Western European hosting providers, but I assume there's loads more across the continent.