Hi Aarthy

The Anna nagar branch of AKASH coaching institute is good among the other branch in chennai.The thing you may found irritating is there  is the crowd and  you will kinda have a lot of diversions. As there are a lot of students study there . If you are okay with it then you will found this branch as good among all other.

On the other hand you can also  go for the other branchs like Ashok Nagar as it is also a good branch and the Ambattur branch is also considered the other good branch for repeaters.

Hope this helps you. 

All the best :)