You cannot do a proper tour of Giverny or Versailles without a private tour guide. We highly recommend Olesya for any and all tours. There is so much INSIDE information that you receive from a “Knowledgeable” tour guide. No waiting in lines. She takes through chronically and it all makes sense. We did the Falling Louvre first, Impressionists Gems the second day. We skipped a day to be on our own and followed up with Giverny and Versailles. It was the perfect sequence as each tour lended to the next. Do not do Paris without a small group (1-6 people) and I highly recommend Olesya.