Pros
Relaxed, upbeat, great benefits for entry level position, training provided. Most of my daily work was completed within the first few hours each day, after my work was done, I was allowed to read, work on homework, listen to music, etc., as long as phones were answered and guests were greeted. Occasionally, I would be assigned additional work, usually able to complete it within an hour. Never had to work overtime. Great for students attending night classes. Favorite place I've ever worked as an Admin.
Cons
If you don't have something to do it can get very boring if you're in a smaller office. Your supervisor can give you more work if desired, however, mine wouldn't out of being worried I could take her job, she admitted that to me- but we still got along very well.