We had a great time at Virginie's flat. The location is perfect to explore the city and is in the heart of all the places that you want to be on a break. It suits a couple perfectly and is a well kitted out airBnB with enough stuff to cook a simple meal if required and a nice shower room.
We enjoyed meals at Petit commerce, beer at the Biererarie, and the one nearby. Coffee at Black list, Piha, Horace.
We were given the option of going to the Dune de Pilat with an organised trip. It was megabucks and so we did it ourselves. Train to Arcachon and then the bus to the dune. Very easy/organised. I think the only thing we missed out on were the oysters afterwards.
We did a local tour with Allais which was great and a pastry course with Christophe. Both through AirBnB and lots of fun.