How would you handle a co-worker who was acting unprofessionally towards our guests?

"I once worked with a co-worker who unknowingly rolled her eyes a lot. Our hotel would be put off, and she wouldn't understand why she continually received complaints. I asked her if she was open to receiving feedback, and she agreed. I went on to explain to her that she was an unintentional eye roller. She had no idea! We worked together for a few weeks on it, and she eventually retrained herself to no longer make that expression."

"It's important to the reputation of Soho House that everyone is held accountable for their behavior. If the hotel receives a negative review, that could affect my livelihood as well. If a co-worker were unprofessional, I would discreetly pull them aside to discuss my concern."