I too was a sceptic, now I'm on the fence.
Whilst undertaking my Whitbread management training I lived in at a pub that I eventually ran. Now this pub is reliably been dated to the 11th century. But it has been extensively enhanced and enlarged over the past 9 centuries.
Whilst working one afternoon, I was cleaning the glass washer behind the bar. Everything was stripped down and in the sink soaking Now this glass washer was opposite a long hallway, it led right though the pub. Doors off of it led on the left to the accommodation and an open archway, to the food servery, on the right