It's the most spectacularly ornate Sam Smith's pub, that's for sure. Last time I was in there, though, it was absolutely filthy - literally grime everywhere, and the (again spectacular) gents toilets absoultely stank to high heaven. You could smell them throughout the pub, which is going some considering they're in the basement. Staff were arrogant wankers too.
I have heard it's due to be restored and cleaned up, which is not before time as parts of the ceiling etc are getting dangerously neglected.
Much as I like Sam Smith's for their preservation of great pubs, their beer is by in large crap. Keg bitter? Rubbish.