Waiter Stenn is a minor speaking role in Chapter 26 of The Good Place. He brings Eleanor her steamed vegetable medley and iced water, and that's it.
He is played by Ben Harris, who is one of the casting directors on the series (along with Alison Jones), and was also a casting associate on Michael Schur shows The Office and Brooklyn Nine Nine. He has also played a waiter in Curb Your Enthusiasm.