I search any information on the Hotel Meereswarte located in Swinoujcie, Poland. When was it built, owners around 1920-1950, history during WW II, latest history etc?

Also I search any information on the family:
Edvard Wilhelm Klemp, born 1858 in Hamburg
Wife Emma Kristine nee Schmidt, born 1878 Brandso, Denmark
Son Willi Klemp, born 1907 in Copenhagen. SS oficer in Copenhagen during WW II. Married Greta Wekker around 1937. Daughter Marie Louise born 1937 in Swinoujcie.
Son Emil Alvin Lauritz Frederik Klemp, born 1919, Denmark.
Stepson Jörgen Agner. Birth date and place unknown. Was killed during WW II at the east front.

The family were mannagers on Hotel Meereswarte from around 1920 until they left the city about 1945.

Any information is of great interest!!!

Is there an archive in Swinoujcie, where it might be possible to search information on the family and the hotel?