Pros
Flexible schedule and decent extra income if you need a second job.
Cons
I recommend taking pictures of all of your work before leaving an account. In my experience, I received complaints about things that I know I completed, including trash that I know I emptied. Later, photos were provided showing issues, but there was no visible date or timestamp to show when the photos were actually taken. This made it difficult to understand when the issue occurred or whether it reflected the condition of the account when I left.
I also found it frustrating that when I tried to explain my side of a situation, I did not always receive clarification or a response. Instead of feeling supported, I felt like I had to defend work that I had already completed.
Another thing I found unprofessional was being asked how much I was being paid.