I stayed for two weeks with a host family. I had a host "sister" my age which was very very beneficial as I had someone to explore the city and live with who I could be friends with. I attended the standard B1 class in the mornings, and I had the cours particulars on tuesday, wednesday and thursday in the afternoon. I also attended one of the exclursions.
I liked how welcoming everyone in the class was, and how we felt like a team with a like goal. The homestay was great for immersion into the french language, and it was really great exploring the city with the friends I made here.