Really depends on what you expect for 1 Euro. A single CPU core of an Intel Xenon Gold 6230R isn't much but it handles small loads very well. 1 GB memory is okayish. 10 GB SSD? Meh. A dedicated IPv4 address? That's hot! The uptime is flawless and it's fine to host or forward requests and serve as VPN gateway for my personal stuff or host a few small services. For 1 Euro/month it's a good offer. I used it to encode videos for months. No complaints or something from them.
But according to Reddit, once you get into trouble, the support is the biggest weakness. I'm just parroting what other people probably also parroted.