Strawberry mousse with pistache cream inside, the Saya by Sadaharu Aoki is my favourite cake. Sadaharu Aoki have two patisseries in Paris, 35 Rue de Vaugirard near the Luxembourg park, and 56 Boulevard de Port Royal in the 5 arrondissement.
Promenade along the water, two cinemas face to face linked by a riverbus, bookshop, bars (specially BarOurcq 68 quai de Loire), restaurants, theater barge…