May we shuttle from Hotel Park Inn, Allee du Verger, Roissy en France (near Charles de Gaulle Airport) to Paris Marriott Rive Gauche Hotel, 17, Boulevard Saint Jacques, Paris, 75014? How much would it cost?
Do we need a reservation? Whom do we contact?
Contact either of the hotels for a start.
If the Park Inn offers a free shuttle service to CDG airport, you can then take a regular shuttle service from CDG airport to your Marriott hotel. IMO, a direct taxi or private transfer arranged through the hotel may be the simplest solution. Unless someone here can recommend a private car & driver for the Paris area? I know a couple of good ones in Rome, but of no one for Paris...
Just an FYI - IF you took RER B from CDG, it's an approx. 40 min direct train with a stop 2 blocks from your hotel, and as a bonus, the train station is even on your side of the street - no street crossing! It's €8,70 per person. Unless you have health issues, or are carrying lots of luggage, consider taking the train into Paris. Your guidebook has the info on this, and/or visit ParisByTrain.com for some great info (even if you don't want to take the train!). **Don't confuse "Blvd Saint-Jacques" with "Rue Saint-Jacques" - they intersect!