The will stated that the house be kept intact, so as to show to visitors in 100 years "a specimen of a bourgeois home of the nineteenth century".

The architect gave free rein to his taste for eclecticism: in the study and dining room with wood paneling, and the neo-renaissance decor of the "room of the four seasons" with plaster decorations and paintings in the style of Louis XVIII; the modern bathroom has stained glass and paintings in the Art Nouveau style.

[4] The house incorporates the technological innovations of its period: electrical lighting, hot-and-cold faucets, overhead shower and flushing toilet.

[3] The museum contains a dizzying maze of paintings, books, photographs, miniature objects, stuffed animals, ceramics, minerals, carvings and rare and unusual objects gathered by Louis Mantin from his travels in different parts of the world.

The entrance to La Maison Mantin is in common with the Anne de Beaujeu Museum, and permitted only with a guide-lecturer.