There is beach within 5mn of the workshop site called "Plage du Port": turn left when leaving La Berlugane and proceed a few hundred meters to the entrance of the Harbor (Port). Then go to the far end of the harbor and you will find a nice beach with palm trees. Water temperatures around 18C can be expected at the time of the workshop. Some years there is jelly fish (in French "méduses") but you can usually see them. Below this point, all maps are to be found here.
There are many pleasant footpaths (promenades) along the shores of Saint Jean Cap Ferrat (map 7). Promenade Maurice Rouvier, which starts a little West of the the Casino in Beaulieu and follows the north east coast Cap Ferrat is highly recommended (walking from La Berlugane to the center of Cap Ferrat takes about 25 mn). From there you can walk around the Pointe Sainte Hospice (in 25'), the very beautiful secondary peninsula on the south east of Cap Ferrat.
Beaulieu. Villa Kerylos, a reconstitution of an antique Greek villa, is of some interest (G on map 5; open 10:00-18:00)
Saint Jean Cap Ferrat. The Fondation Ephrussi de Rotschild (A on map 7; open 10:00-18:00), is of major interest (paintings, gardens, view). The zoo (B on map 7, open 9:30-19:00) is in a pleasant park.
Villefranche-sur mer (west of Beaulieu). The harbor and the old town are very attractive and can be reached by a pleasant walk from Beaulieu (map 3). From "Pont Saint-Jean", the western entrance to Beaulieu, follow the railway track on the south side (the opposite side from the main road going to Nice). After a few hundred meters walk down the steps and follow along the sea shore for about 1km to the harbor of Villefranche. Total walking time from La Berlugane to Villefranche harbor: 30 mn.