Industry friend sent me a great screenshot of a Google search for the term"Crowne Plaza Cambridge". Google mapping or indexing pushed the result to www.hilton.com. Ooops. Unfortunately I can't replicate the result as I am an Australian IP address and my friend was in the UK but here is the screen shot.
Update - Xotels boss Patrick Landam has solved the mystery. The Cowne Plaza Boston/Woburn was rebranded the Hilton Boston/Woburn after a $10mm refurb in 2008. Shame that Patrick's good research killed a great Google conspiracy story and shown me up to be nothting but a haphazard blogger :).