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Celtina, S.L.Immersion



Bonjour ! My name is Celtina Masardo, French teacher and S.L.Immersion’s founder. I’m glad to organise for you the perfect programme of authentic immersion language homestay or personalised online one to one sessions.

In 2012, I set up S.L.Immersion. Before that, I have been teaching French for foreigners for more than 10 years in schools in Lyon and Switzerland but I wanted to offer more authentic, intensive experiences that are different to other learning centres.

I started to welcome students at my house to live and study the real French today with me. As my French courses in Provence became known and very popular due to the success with students, I expanded the offers in France with the help of local teachers, passionate about their region and the French language. Hence, I have personally selected each teacher with high certification and experience in teaching. Our programs provide high quality stay in total immersion with private and adaptable courses: a combination of Learning, Culture, Exchange with the local, and Authenticity.


Are you looking for a unique environment especially created to improve your French language in an authentic French setting? Whether you are a beginner or advanced student, from 18 to 80 years old, you are welcome to join up with your friend, partner, family or simply on your own. As a student, you will stay with the teacher and family in their home. You will take scheduled classes, as this is an important part of the learning process, but you will get to practice your French in a real life environment. If your motivation is to Learn French is for pleasure, work, a preparation exam, or simply to discover the region, this personally tailored French immersion at the teacher’s residence will help you master the French language in no time!

Enjoy immersion in France
Course French immersion in France




What could be more special and memorable than learning French with a truly exceptional immersion course where you stay with a French teacher and their family in their home in lovely France. Now you have the opportunity to live the French life enjoying the food, discovering secret places — and learning French at the same time.

Your Immersion Program


  • Welcome at the teacher’s home
  • Learn French | One-to-One | Small groups
  • Personalized French lessons
  • Discover France with tours
  • Accommodations at your teacher’s home
  • Comfortable double room
  • Ensuite Bathroom (optional)
  • Share meals with your teacher
  • Airport transfers (optional)
  • Types of Course
  • Private Classes or Small Groups starting at two and up to four students with the same level for all participants




Exams and Certifications


Chambre de Commerce et d’Industrie de Paris’s exams




CIEP’s exam and certifications


  • DILF : Diplôme Initial de Langue Française
  • DELF : Diplôme Etude de Langue Française
  • DALF : Diplôme Approfondissement de Langue Française
  • TCF : Test de Connaissances du Français
  • TEF : Test d’Evaluation du Français
  • Test en ligne



Exams certification




35 Impasse des Mûriers – 84450 Saint-Saturnin-Les-Avignon, France

+33 (0)6 26 57 25 10


Contact us


Our commitments

Contact us

  • The best homestay at the highest quality. Totally personalised to reach the student’s needs.
  • The fastest way to improve your French and get more confidence in speaking.
  • A unique and effective teaching method to learn French today’s language.
  • Comfortable and lovely accommodation at the teacher’s home.
  • Meals and guided conversations in real life.
  • Discover the French culture.
  • Test and certificate.
  • All teachers with experience and certifications.
  • Real feedback and reviews from our students