Hi Venkatanarayana, for doing PGDM no doubt IMI is a good one. Just for your information, if in any case, you want to know anything about any institute or college or university, there are 2 sites which review students opening who are pursuing from the same institute or college or university...

https://bschool.careers360.com/international-management-institute-delhi/student-reviews

https://collegedunia.com/college/18100-international-management-institute-imi-new-delhi/reviews