Hi @Denis66 you have a bunch of great reviews on top of that iffy one - so I would just grumble internally, and let it go. We all know that guests don't read too much, so the likelihood of someone actually reading ALL the reviews is small, and if they do read the bad review and your response and still don't book - well, too bad. You're doing a good job, you have happy guests, and this one guest was bad.
BTW, I personally am not a fan of replying to reviews. Some hosts are very good at this, but I think it draws more attention to the actual bad review, so unless it's a one-liner like "this guest booked a studio apartment so there is no second bedroom", I personally don't reply. It's easy for me to say this because I've been doing it for a long time and my skin is a bit thicker now. I take what bad feedback that I get, I try to be very rational and objective about it and see if there's anything I can fix or learn, then I swear under my breath (and sometimes scream into a pillow), then let it go.