I work for a German company but would like to start permanently tele-commuting. In order to not create additional administrative overhead for my employer I would like to keep my tax base in Germany. I am therefore looking to move abroad but have a mailbox in Germany and, importantly, registration so that I am still considered a resident (I am an EU citizen). Is there a way to do this? Is there some company that offers tiny apartments or some other solution so that I can keep my city registration in Germany with minimal monthly costs?