Instructions and design instructed us to build the mirror at the back. This is not the advertised design. The holes were in the wrong side of the panel. The thing is, I really like the item and it took so long to build that I cant be bothered to send it back, its functional and serves the purpose. I also like how it looks in my house, but who wants a mirror at the back?! I think this was a one off error?! 
I will buy some mirror tiles to stick at the front to compensate for the  mistake. Otherwise it's a really beautiful product.