As an art lover, as well as a foodie and music enthusiast, allow me to suggest a few unmissable spots.
I definitely recommend the Studio de l’Ermitage, which is the perfect place for a concert evening. Their program is as good as the ambiance.
For a gourmet day, try brunch at the small tea room in the 17th arrondissement called À la Volée, where you can get delicious homemade cakes which are just to die for!
Follow this with cocktails and canapes at Bouche, the wine cellar that offers products from French terroirs in a particularly warm and friendly setting. For an afternoon of culture and a stroll, start with an exhibition at Palais de Tokyo, the not-to-be-missed art center, and end the day with a stroll along the banks of Seine river.