Though I have no proof, this small hotel in central London is said to
have a pianola in one of its guest rooms: http://www.22yorkstreet.co.uk/

If you are staying in central London it looks much more interesting
than the usual chains or the horrible tourist hotels around Victoria
and Paddington.

I must emphasise that I have no connection with the hotel nor have
I ever been there. All I have seen is their own web site and a
recommendation in Time Out (London's main kistings magazine).

Jeffrey Borinsky, London