How do you reply to negative reviews without arguing in public?

A negative review is answered with the fact you can acknowledge, an apology if one is due and an invitation to continue in private. Rebutting the guest point by point in public does not help, even if the venue is partly right. Someone who was on that service confirms what happened before the reply is published. A defence is written at night and by morning the review has more replies from the venue than from the guest. A four-line reply, checked by the floor, plus the phone or WhatsApp for what does not belong in public.