The ceiling with chandeliers is indeed the second floor. To complete this level, you'll need to assemble and glue the second floor walls onto the ceiling, and then attach the entire structure on top of the first floor walls. Threading wire through the floor holes will be necessary during this process.
I installed the window frames into the arch, which is helping the
structure take shape. The dollhouse assembly can be challenging because
the instruction photos lack a clear floor plan. Unlike traditional
dollhouse kits, these instructions require careful interpretation, and
you'll often need to make educated guesses about component placement.
Despite the complexity, the provided photos are quite helpful in guiding
the assembly.