If you are ambitious and wish to have an extraordinary job / lifestyle, ESSCA is probably not the right choice. Go for tier 1 schools.
If you want to be like everyone and get a decent job, with a decent pay, I would recommend applying to universities in Paris. At least, you won’t pay the crazy fees.
The added-value of a business school is the network and the student life.
1. The network at ESSCA is solid but concentrated in small, family-owned companies. If you are targeting big banks, listed companies, etc., you should also target a better ranked school.
2. The student life is great… but only in Angers. In Paris, going to Uni would be the same.
That being said, the school environment (teachers, students, alumni) push you to make efforts.