Employer of Record, remote hiring

I'd love to hear from anyone who has experience using Employer of Record (EOR) services. I'm working at recruiting for a medium size company in Germany and we're looking to hire a person who unfortunately can't move to a country where we have a legal entity. I really want to hire them but I also don't want to increase the overhead and processes for our hiring team.

Has anyone here used (either as an employee or an employer) EOR services to manage the taxes, social security, pension insurance etc required for hiring someone in a different country? All the EOR companies say it'll be super easy and everything is taken care of, but is this really the case or is there still significant effort involved?