We plan to move our very small instance this month or next (currently VPN self-managed w/ Digital Ocean) to a managed hosting provider in the EU.
The only two providers we've found that meet our criteria so far are masto(.)host and toot(.)io.
We have no experience with either; this is based solely on recommendations we've gotten here and online searches.
We have "tested the waters" with a different EU-based host. Based on our experience we think we need more robust tech support than they provide.
Hope this might be helpful and best of luck.
Feel free to DM.
[edited: self-hosted to self-managed]