I don’t know if you have a clear plan in your head
but with online.net (scaleway) you could have a 2core for 3Euro per month
https://www.online.net/en/dedicated-cloud#starter-cloud
and it could be based in Netherlands if you want 
I built Nethserver on their BareBone and Cloud version without any issue.
But just becarefull the barebone version have 2interface and the main one is direct on the net (no firewall) in front.
Or an Italy based VPS for EUR1,- per month with arubacloud.com (with less specs)
NethServer can do the firewall by itself… 
just in case I just found this voucher and it works for 15Euros off.
ARUBACLOUD-DIGITALIC-0317
Works pretty well 
just created a 1€ (+VAT) VM using this code. Basically you will have a machine for free for one year 
Hint:
Just be sure you are using the “use voucher” link at the upper right to when you want to order a machine.