@Cat-Phuong0 Just as you as a host don't get notification that a guest has left a response to your review, the guest also doesn't receive notification, as far as I'm aware, and most will probably never see that you've left a response, as it appears on your review page, not theirs.
So leaving a response for a good guest, thanking them, isn't really necessary, as you've already, presumably, left them a good review. It would be more for future guests' benefit, to make you look like an appreciative host.
And if you are responding to a bad guest's bad review, or complaints in a review, you should definitely not address the guest. In that case, you would respond only to correct misinformation for future guests, or to indicate you have corrected something that the guest had a legitimate complaint about.
So: "The check-in issues this guest complains about were due to his failure to read the clear information that was sent to him, and all our guests, re which door to enter and how to work the door lock. Smooth check-in has never been a problem for any of our other guests."
Or: " I appreciate being made aware that the living room window was stuck shut, although we would have addressed that during the stay had the guest contacted us about it. We've done the necessary repairs and that is no longer an issue."