Vantaggi
Management are very friendly, extremely tight knit community. If you have any questions, they will try their best to explain it to you. Very flexible hours as a student, lax eating rules, tasks were not mindless, and you will learn a LOT if you put in the effort and be proactive.
Svantaggi
Some compensation would have been nice, but there's none of that, which is to be expected from an unpaid internship. Assignments can get slow at times, and you end up with a decent amount of free time. Pretty unstructured internship, mostly based on what assignments come up, and you don't see direct results of your work after submitting.