I have found a painting by Kaczmarek Tadeusz (automatic translation) (1937-2006)…
…and because one wants to be on the beach in summer in the middle of winter, I bought it.
Kaczmarek Tadeusz was a Polish artist who worked as a painter, graphic artist and interior designer. He lived and worked mainly in the Lower Silesian Voivodeship.
The painting shows the beach of Boltenhagen, Schleswig-Holstein on the Baltic Sea coast.
There is also a blog with some of his works. A very similar painting is also listed there.
Translated with www.DeepL.com/Translator (free version)