First of all, have you signed the inventory? This will state the condition of the property when you move in and you have to sign your agreement to this. Obviously you wont have signed an inventory for something you haven't seen, will you? What does the inventory say about the condition of the bathroom?
As an aside to that, why are you handing out �4800 for a property that you haven't seen all of? And why are you paying 6 months rent in advance? Have you also paid a deposit?
The inventory is the key though to any arguments about the condition (though I really can't believe you wouldn't ask to view the bathroom).