Pros
I worked remotely, the working time was flexible which was good a student. I just got a certain task (annotate texts from this category until next week) and I could do it whenever I wanted. It just had to be done for the deadline. I often worked on it at nights or just sacrificed a day, so I had another 6 days free. It was an internship though, I don't know if it's the same if you're working full time.
Cons
Some texts given weren't transcribed correctly to the point of gibberish, but they fixed that whenever it was reported. It just took some time and delayed the completion of internship (it was contract for certain amount of texts).