The airports of the  Côte d'Azur can be found in the next 3 places:

Nice - At about 45 minutes from the apartment. Every 10 minutes free shuttle buses leave from Nice airport to take you to the rental cars or to the railway station of Nice. There are also direct buses to St Raphael en Fréjus.
Toulon - At about 60 minutes from the apartment.
Marseille  - At about 70 minutes from the apartment. 

Below you will find the airlines that fly to the Côte d'Azur:

From The Netherlands:

Ryanair
From Eindhoven direct flights to Marseille.

Transavia
From Amsterdam direct flights to Nice and Toulon.
From Rotterdam direct flights to Toulon.

KLM
From Amsterdam direct flights to Nice, Toulon and Marseille. 

From Belgium:

Ryanair
From Bruxelles-Charleroi direct flights to Marseille.

Jetairfly
From Bruxelles direct flights to Toulon.  

Train

The nearest railway station is in St  Raphael. From there it is easy to take the train to e.g. Cannes or Nice. Every hour intercity trains leave for the seaside towns on a regular basis.

Rental car

Are you looking for a rental car at Nice, Toulon or Marseille Airport, please take a look at the following sites:  

Hertz - www.hertz.nl
E-autohuur - www.eautohuur.nl
Alamo - www.alamo.nl
Avis - www.avis.nl
Europcar - www.europcar.com