Hello fellow travelers. I really need your help. I have worked to figure out the best solution for a family of 4 adults to not only get around town, but also travel to the Palace of Versailles and a day trip to Provins. We will also head over to Montmartre and would enjoy using the funicular to get to the top.
We will arrive in Paris on a Thursday and then leave on the following Thursday. We will be staying on the left bank. From the airport, we will use an official taxi, so that is not an issue.
Which (of the many Navigo options) is the best option (or possibly a combo of options) to minimize the costs yet maximize our mobility?