Grand Hotel(Sopot),

Grand Hotel in Sopot, Poland, originally built in 1924-1927 as the most refined hotel in Sopot - the Kasino Hotel, enchants its guests with lavish style and elegance, this awesome structure was the jewel of Sopot in a time when the city was regarded as the Monaco of the Baltic. The hotel has always been synonymous with style, and the guest book reads like a Who’s Who of 20th century figures.

More info at  en.wikipedia.org