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.
A paradise for a rest : waterfalls, restaurants and bars (crazy parties at the top of the hills in Rosa Bonheur) As soon as the sun is shining people are going there to share a drink or a meal, lying on the grass surrounded by blazing green.