Based on the character of Cosette, from the Victor Hugo novel, Les Miserables.

The main loft is Cosette and Valjean's Paris home, with the left half devoted to the garden where Marius and Cosette met and fell in love.

The concert hall is the convent where Valjean and Cosette sought refuge when they first arrived in Paris, and also where Valjean later dies.

The disco is going to eventually be the barricades where the students fought (hm, might actually make the Western room this theme instead)

The Venetian palace is undetermined at this time. Perhaps the Thenadiers' inn...

The Haunted Castle is Marius and Cosette's wedding