Hetzner is an obvious one which I've used in the past and liked, but the amount of locations they offer is lacking to say the least.
All aggregators/websites are of interest, not just ones focused on Europe and unmetered connections, but the website needs to at least have filters for location and connection type so it gets easy to find the right server for the right job.
- https://news.ycombinator.com/item?id=14724566 (2017) - "Ask HN: Which dedicated unmanaged and affordable hosting you suggest or use?"
And no - I'm not related to this site or it's owner/s in any way, I stumbled upon it on a reddit post 1 year ago and found it useful.