In the years after 1920 to 1929 Max and Sofie Holländer shaped the ruined Castle Mill into a true jewel. In 1929 Max and Sofie Hollander divorced and in 1930 Max Hollander married Johanna Hollander. In 1934, Nikolaus Haupt reported in the municipality's newssheet about the renovation:“It was carried out from the mighty cellar vaults with the foundation, which here and there is more than two metres thick, up to the loft and it was worked in a radical way. From the three-floor loft, the lower floor was also expanded into dwelling rooms. The important works were performed almost wholly by Heidesheim tradesmen. In the main it is a matter of artistic wall and ceiling coverings, which are made to match the building’s character and which have already enjoyed much attention and approval from professionals. The works are an honorific attestation for former applied arts student and now master joiner Peter Schlitz’s mastery and achievement here.