Confusingly Cagnes-sur-Mer is not by the sea – that’s Cros de Cagnes! It’s worth the walk up the winding road (with no pavements) to find Renoir’s house and beautiful garden.
The house is open to the public in the summer (though it’s advisable to check opening times first at the tourist office). Many of Renoir’s paintings are on the walls and in his studio you’ll imagine he’s about to continue painting.
I love the garden even more than the house – it’s a beautiful peaceful place with the most amazing ancient olive trees
from the garden you have a great view of Haut-de-Cagnes which is the oldest and highest part of the town.
There is a free shuttle bus which takes you at break-neck speed from the bus station up the winding narrow streets to the top of the old town where the museum is and back down again even faster…
thebestplaceinfrance 
Wow this looks beautiful. I’ve never made it there yet, stopping in Cros de Cagnes rather than heading inland. Will put it on my list of places to visit!
Hope you enjoy it! I love Cros de Cagnes too, great restaurants and good petanque terrain!