I used Firstbase (www.firstbase.io/) for my LLC. I'm from Chile (South America), so I don't really know specifics about the EU tax situation. But if you need to open an LLC, I would compare it with Stripe Atlas. I remember it was a lot easier to set up the process, banking situation, etc, compared to Stripe Atlas at the moment (and cheaper)

Tip: regarding income and taxation, you can use your company bank and credit card, and spend your company's money, so you don't "pay yourself" or make any transaction to yourself that could count as income for your EU income/tax details. Of course, that only applies when you are starting, or if there isn't that much company income.

But yeah, taxation is always tricky