Considering the Hotel Verdi in Rostock?
A VT member wrote the following comment about visiting Rostock:
Stadtmauer - City Wall by Mariajoy
The 12th century city wall originally built as a defence of the Slavic castle settlement - only survives in parts around the south side of the city. This section is at Klosterhof (the Cloisters), near Kroepeliner Strasse.