I just got back from a week in Paris. I stayed at the Hotel da Vinci in St. Germain. It's just across the Seine from the Louvre and so convenient to everything. It opened last year and is a small boutique hotel in the same building where the thief who stole the Mona Lisa holed up back in 1912. The service is incredible and the rooms re wonderful. I could not recommend it more. They also have a great app that you can check out.