I enjoyed my stay here. The apartment itself is tranquil and is located in a quiet neighborhood. The room that is available faces a vineyard and the hills and the other side the apartment, you can see lovely sunrises with a glimpse of Lake Geneva. I also really liked the "downtown" area of Nyon, which is 1 tram stop away from the apartment (the tram takes 1 minute and then it's another few minute walk to the apartment)
Diana's mother was the other person in the apartment and she was very friendly. She only speaks French and Spanish, but as I am learning French, I found this to be a good thing and we had several conversations in the evening, even having a glass of wine.
All in all I really liked my stay and would highly recommend it.