Cour des Vosges is an outstanding hotel. it has the charm and character we were looking for, with luxury amenities. We had the "Attic" room, which was perfect for us. Loved the exposed original wood beams from the original structure, and the amazing view from the window out to the square. High-end bathroom with deep tub was great. Luxury linens, very comfortable king bed, and all the touches you'd want from a high-end hotel -- while keeping boutique charm.
But the most impressive aspect of our stay was the service -- from weeks before we arrived to throughout our stay -- they went out of their way to make us feel welcome, provide recommendations on where to go AFTER listening to what we wanted to do while there (from shops and restaurants to sites to see), and purchased tickets for us by doing the research and giving us options for things like Eiffel Tower, Louvre and a dinner cruise, which provided us with skip-the-line access. All of which we would not have gotten nearly as easily on our own. They took care of it while we were out and about in Paris.
The location was outstanding too. In La Marais, it was very close to lots of great shops, cafes, wine bars, restaurants, etc. We LOVED the neighborhood and the location -- great for walking around and exploring, and being a base for our short time in Paris.
Overall - highly recommend!