Finally I found an interesting offer. Small, cloud-based VPS server which fulfills all my needs - Aruba Cloud.
It costs only $1 per month. For that price we got:
- Hypervisor: VMWare
- OS/Templates: OS/Linux distributions, Windows Server (additional costs), FreeBSD
- 1 public IP address (IPv4)
- 1 CPU
- 1 GB RAM
- 20 GB SSD storage
- Bandwidth: 1000 Mbit/s 2TB/Month
I created a server with Ubuntu Server 16.04 LTS installed.