Hotel 1231 is a four-star boutique hotel located in the heart of Toruń’s Old Town. It consists of two buildings connected by an underground corridor. The first is housed in the restored 13th-century Castle Mill, while the history of the second dates back to the 14th century, when it served as an Infirmary — a castle hospital for knights returning from the Crusades. Both buildings stand on the grounds of the former Teutonic Castle ruins.