The people, the content, the skills, the responsibility, the training, the support, the perks, the work/life balance, the respect, the other interns, the travel, the location, the feedback
Nothing specific comes to mind!
Advice to Potential Interns
Ask lots of questions, speak up, listen well, stay calm and in control, be humble, ask for help, this is the best place to grow and accelerate your career
Advice to Management
No specific advice comes to mind