André Dietz wrote and composed all songs played and sung by his character Ingo Zadek.
Sarah Thonic and Julia Schläfle played the same role Liv Sonntag on Hotel 13 (2014) they play a role on this series but not together
Nina Bott (Celine) and Raphaël Voigt (Daniel Leyer) played a couple for a long while on the show Gute Zeiten Schlechte Zeiten (1992). Their characters even had 2 children together