Fast-paced work environment, stressful if you can't handle the workload
There was a real push for me to hit the ground running with this internship as we were in the middle of a project and there wasn't much room for sloppiness or a long learning curve, so having a good head on your shoulders is necessary.
It sometimes felt a little rushed when my supervisor was explaining to me how to perform a task as he has a bunch of his own responsibilities to worry about, so it might be the kind of place where if you need to ask how to do something more than once or twice than it isn't the ideal work environment for you.
That being said, the more I was able to handle on my own, the more responsibilities they'd give me which was a big plus in terms of experience.
Overall positive experience, the workload could get a little heavy at times but i generally didn't work more than 10 hours OT in a week, and I've heard of other interns having it worse. Also, the more organized you are, the less strenuous it'll be to get all your work done on time.