Just a quick message having spoken to Thomas, the webmaster, who suggested this forum might be the right place!!
In brief, over the past few years I have worked on a website devoted to accommodation connected to famous figures from history. As it is, I've just added a new section which makes it even easier for visitors to find a place to stay linked to an individual they might be interested in, including Boswell (his entry is here http://www.nightsinthepast.com/historic-figures-b.html)
Anyway, I would be extremely interested to learn of any other places he might have stayed in addition to the couple that I've already listed. All information gratefully received!!
James Boswell died in 1795 believing he had touched and kissed a cache of Shakespeare's original letters and papers discovered by a Mr. Ireland. His friend, Edmond Malone, publicly exposed the lot as a forgery just a year later.