I liked that I got regular experience working in R, it made me a better programmer. I got to talk to experienced R programmers and learn more about how to write my own functions.
What I wish was different
I think that the management was at times impersonal. Our supervisors worked in an upstairs office and would almost never come down to check on us. Correspondence occurred in Slack (software for message rooms, think IRC 2.0). It affected morale.
I would be more forthcoming with the management about needing help. Don't be afraid to ask them in Slack or directly for assistance. Getting help requires asking for it.