My brain hurts!
According to Google Maps searching for the "Grand Folkstone" goes to the "Folkstone Grand Burstin" on the Harbour Approach Road. The Metropole is some distance away on Metropole Rd E, with "Folkstone Art Works: Yoko Ono, Earth Peace" next door. However when I go into GSV it says "The Grand" on the front and I can see a glass veranda. I shall resume my search later today after a lie down in a darkened room.