Dh and I once stayed in a funny hotel in Sidmouth, must have been the 1990s. Some of the rooms were given over to residents I remember.
There's a lot of back and forth in Men at Arms by Evelyn Waugh where the owners of a residential hotel are trying to get rid of Guy Crouchback's elderly father because they can make more money from non residential guests in wartime. Which paints another vivid picture of this existence.
Of course , famously, Margaret Thatcher spent her final years in a suite at the Ritz Hotel. Can't imagine that was very similar to The Claremont.