The reviews may or may not be genuine, for me there are sufficient from guys with high numbers of reviews that are not connected for it to make sense. Its not an endorsement though.
A little checking does produce some interesting results however, and here I have to be very careful as to whats in the "public" viewing.
The phone number leads to a property rental company which will lead you to a UK Ltd company and a director, who is Italian. One of the languages she speaks, is Italian.
So I'm not so sure you would get the genuine Persian Princess......but the name on the Company seems Middle Eastern.
Maybe the London property rental market is a tad slow these days, but pussy rental is always in demand