Pros
I emailed them about a summer job posted listed on their website, and initially the person I contacted told me that they had no additional spots open, but they would contact me if any opened up. Within a week they emailed me back telling me that a spot had opened up, and over the next few weeks they worked with me to get to them the information and documents they needed. All throughout this process my contact was prompt in answering my questions, and was willing to accommodate my schedule as a college student in another city. I didn't have much contact with them during the job itself (I hired out to another organization for the job), but their online system for recording our hours was easy to use, and I had no problems with them.
Cons
I really don't have anything negative to say from the short time I worked for them. The closest I have is that the original job posting was a little vague, and could have contained more information about the exact responsibilities and details of the job, such as which organization was hiring me (and a link to their website).