Professor Layton and the Curious Village Hints

The following tasks must be completed to unlock the puzzles in the bonus menu.

Puzzle How to unlock
The Art Lover's House (Puzzles 127-129)
Complete Portrait

The Decorator's House (Puzzles 124-126)
Fill rooms in the Inn to give maximum satisfaction.

The Golden Apple's House (Puzzles 130-132)
Beat game

The Puzzle Master's House (Puzzles 133-135)
Find and finish all 132 previous puzzles.

The Inventor's House (Puzzles 121-123)
Assemble Gizmo

OK, go to maholo.com and type in Layton and you'll get a GREAT walkthrough there. It shows every bonus puzzle, where to get all the collectables and hint coins. It rocks! Only thing is that 1 or 2 puzzles are differant, mine is the european version, but apart from that, its great.
P.S. for puzzle 100 go to gamefaqs
P.P.S. i take NO credit for the walkthrough.