I remember, I had to file one paper from the landlord and my ID and that was it. Took 5 minutes.
While not awful, comparing to Portugal, where I just need to register in a website an then wait to get a confirmation code by mail, it feels like going back to the stone age.
You mean what was formerly known as GEZ?
No worries, nowdays that got easier, they just help themself. In my case they just took the money straight from my bank account without consent or asking first, or without me even giving them my current account. (No idea how that was possible, it was the same account as some years ago, but I was living offroad for some time and never gave them permission, but suing them is a fools errand)