NIT Andhra Pradesh has somewhat okay facilities for Computer Science students but not the best. Whereas, IIIT Sricity offers faculty from deemed universities of the world. The college also has a great environment for coders because all the branches are computer science oriented. So, if you are planning to do CSE, IIIT will be a better choice as a student. However, you should also know that the curriculum at IIIT is stricter than NIT. The college imposes a number of guidelines on students and they have to be followed. NITs do not have that strict environment and students can flourish on their own. So make your choice on the basis of these factors.