He says he would have given her a good review, but he has not reviewed anyone to date. Let's be honest here. Guys who only write one review and it's a crap one don't really get taken seriously, so the lady in question might as well put her reviews back up, as no one would take his one negative review seriously anyway. If guys want to use the review system then they should really add to it, so when situations like this do occur they can add to the reviews instead of bleating about the bad experience on the forum.
Negative reviews do get published. You just have to be balanced and objective and not emotional when you write it. As in don't say the woman is ugly and the apartment is disgusting or tick all the negative boxes, just because you didn't get the time or services you had asked for. Remain fair, but honest and it should get published.