Upvote:2
You should apply at the embassy/consulate of the country which is the main destination of your trip. All other things being equal, the country where you spend the most time will be your main destination, but there can be exceptions.
But if you distort the description of your trip to justify an application at the Netherlands, you risk a refusal/rejection because the premise sounds insincere to the visa officials. Telling the truth is the best policy on the long run. If you want to go to Italy, apply in Italy.